The Best Angle Grinders: 4 Compared (and One to Skip)

RBE top pick

Metabo WEPBA 17-125 Quick RT DS

The Metabo is the only grinder here whose maker publishes what your hands and ears are actually taking, and its brake is described as mechanical and working through a power failure rather than depending on the motor. The Makita gives up those numbers and the brake, but it is the one that solves the guard problem by not letting the guard come off.

See why it wins Compare all

An angle grinder spins a bonded abrasive wheel fast enough that the wheel's own strength is the safety margin, and almost every buying decision that matters is about what happens when something goes wrong. Three of the four tools here publish restart protection, meaning the motor will not spin up on its own when power comes back after an outage; one does not, and that one is also sold with a button that latches the paddle switch on. Only one of the four publishes a vibration figure in metres per second squared or a noise figure in decibels for the US market. We read the manuals and the spec tables rather than the box copy, because the switch behaviour, the brake and the guard are all documented there and nowhere else.

Metabo

WEPBA 17-125 Quick RT DS Angle Grinder

Buy it

The only one of the four whose US spec sheet prints a vibration figure and a noise figure you can plan a workday around.

Best for: Someone who grinds for a living and wants the maker's own vibration, noise and brake numbers on paper before they commit.

$$$ · premium

Why we like it

• Publishes 6.1 m/s2 vibration for surface grinding and 4.4 m/s2 for sanding, each with a stated uncertainty of 1.5 m/s2.
• Metabo describes the disc brake as mechanical and patented, stopping the disc in 2 seconds after release even during a power failure.
• Feature list names electronic soft start and restart protection, plus the S-automatic torque limiting clutch for when a disc jams.

Know before buying

• The published 6.1 m/s2 is high enough that trigger time, not battery or cord, becomes the limit on a long day.
• Sound pressure is listed at 95 dB(A) and sound power at 103 dB(A), so hearing protection is not optional with this one.
• Corded only, and at 6 lbs without the cable it is the heaviest of the four.
• Sits at the top of the category, and the M-Quick nut is a Metabo system rather than a universal one.

Check current price on Amazon Read our detailed assessment ↓

Makita

GA5053R 4-1/2 in. / 5 in. Paddle Switch Angle Grinder with Non-Removable Guard

Buy it

Makita states the guard is designed to stay permanently attached, which removes the single most common shortcut people take with these tools.

Best for: A working buyer who wants the guard question settled at the factory rather than left to a moment of impatience on site.

$$ · mid-range

Why we like it

• Non-removable guard that still rotates tool-free, so there is no trade between adjusting it and keeping it on.
• No lock-on switch at all, and Makita's spec table lists a two-stage lock-off you have to work to start the tool.
• The instruction manual documents an unintentional restart proof function, with a note to wait more than one second before restarting.

Know before buying

• Makita publishes no vibration or noise figures for this model in the US documentation.
• The spec table lists Bind-Up Control as No, so there is no electronic kickback cut-out.
• No brake is listed, so the wheel coasts after you release the paddle.
• The non-removable guard is a hard limit if a job genuinely calls for a different guard type.

Check current price on Amazon Read our detailed assessment ↓

Bosch

GWX18V-50PCN 18V X-LOCK Angle Grinder with No Lock-On Paddle Switch

It depends

The most electronics of the four and the fastest wheel changes, but it will only take X-LOCK wheels.

Best for: Someone already on an 18V platform who changes wheels constantly and is willing to rebuild their abrasive stock around one mount.

$$$ · premium

Why we like it

• Bosch publishes KickBack Control, restart protection, drop control and an X-Brake for rapid stopping when the switch is released.
• The X-LOCK mount snaps a wheel on and releases it with a lever, with no spanner, flange nut or loose parts to drop.
• No lock-on paddle switch and a Vibration Control auxiliary handle, at a listed 4.5 lb as a bare tool.

Know before buying

• X-LOCK accessories only, so standard threaded and 7/8 inch bore wheels you already own will not mount.
• Bosch publishes no vibration or noise figures for it on the US product page.
• Sold here as a bare tool, so it only makes sense if you already hold 18V batteries and a charger.
• No-load speed is listed at 9,000 RPM, the slowest of the four.

Check current price on Amazon Read our detailed assessment ↓

We'd skip it

DEWALT

DWE402 4-1/2 in. (115mm) Small Angle Grinder

Skip it

A capable grinder sold in two versions, and this is the one with the button that latches the paddle on.

Best for: Nobody who has the choice, since DEWALT sells the DWE402N with the same motor and no lock-on button.

$$ · mid-range

Why we like it

• 11 amp AC/DC motor at 11,000 RPM, and the manual documents the correct Type 27 and Type 1 guard pairings clearly.
• One-Touch guard rotates through 360 degrees with a single action, and the wheel releases without a wrench.
• Auto-off brushes shut the tool down when the brushes need replacing, which is a real durability feature.

Know before buying

• DEWALT's manual lists a lock-on button for the DWE402 that the otherwise identical DWE402N does not have.
• The published feature list names no restart protection, so a latched-on tool has nothing documented to stop it restarting when power returns.
• No brake of any kind is listed, so the wheel keeps spinning after you let go.
• Neither the US product page nor the manual publishes a vibration figure in m/s2 or a noise figure in dB(A).

Check current price on Amazon Read our detailed assessment ↓

How we judged the field

Five things decide whether an angle grinder is a good buy, and none of them is the amp rating. First, the switch: a deadman paddle stops the tool when you let go, a lock-on button defeats that, and the makers state which one you are getting. Second, restart protection, which stops the motor spinning up by itself when power returns after an outage or a tripped breaker. Third, the brake, and specifically whether it is described as mechanical, since a mechanical brake still works when the power has gone. Fourth, the guard: whether it adjusts without tools, and in one case here, whether it comes off at all. Fifth, whether the maker publishes a hand-arm vibration figure in m/s2 and a noise figure in dB(A), because those are the numbers that govern how long you can safely hold the thing.

The field splits neatly along documentation. Metabo publishes a full technical values block with vibration, uncertainty of measurement, sound pressure and sound power, and describes its brake as mechanical and patented. Bosch publishes a long list of named electronic behaviours, including KickBack Control and drop control, but no vibration or noise numbers on the US page. Makita publishes neither, but does something no one else here does and makes the guard non-removable by design. DEWALT publishes the least of the four and is the only one that sells a lock-on variant alongside a no-lock one, which makes the choice between them the entire story. We picked four tools that are all currently listed by their makers, and judged them only on what those makers put in writing.

Metabo WEPBA 17-125 Quick RT DS Angle Grinder - buy

The Metabo WEPBA 17-125 Quick RT DS is the only grinder here that tells you what your hands and ears are actually taking. Metabo’s technical values list 6.1 m/s2 for surface grinding and 4.4 m/s2 for grinding with sandpaper, each carrying an uncertainty of measurement of 1.5 m/s2, alongside 95 dB(A) sound pressure and 103 dB(A) sound power. That transparency cuts both ways. The European daily exposure action value for hand-arm vibration is 2.5 m/s2 averaged over eight hours and the limit value is 5 m/s2, so on the directive’s own arithmetic 6.1 m/s2 reaches the action value in roughly an hour and twenty minutes of trigger time. Those thresholds are European rather than American, but the number is real and no rival will even tell you theirs. The rest is unusually well specified: a deadman switch, electronic soft start and restart protection, a patented mechanical disc brake that Metabo says stops the disc in 2 seconds after release even during a power failure, the S-automatic torque limiting clutch for a jammed disc, an autobalancer, and a steel ring for a carabiner. At 14.5 amps and 10,000 RPM on a 5 inch wheel, it is a full day tool. For anyone who grinds for a living, this is the one.

Makita GA5053R 4-1/2 in. / 5 in. Paddle Switch Angle Grinder with Non-Removable Guard - buy

The Makita GA5053R answers the question nobody else on this list answers, which is what happens when someone decides the guard is in the way. Makita states the guard is designed to remain permanently attached to the tool, while still rotating tool-free for adjustment. The switch story is just as deliberate: the spec table lists Lock-On Switch as No and Lock-Off Switch as Yes, Makita describes a two-stage power lock-off you must work through to start the tool, and the instruction manual documents an unintentional restart proof function, with a note telling you to wait more than one second before restarting when it engages. The manual gives a rated speed of 11,000 per minute, 115 mm and 125 mm wheel diameters across the two model numbers, a maximum wheel thickness of 7.2 mm and a net weight of 5.5 to 6.0 lbs. What you give up is measurement and stopping: no published vibration or noise figures, no brake, and Bind-Up Control listed flatly as No. There is also an integrated tether loop for work at height. For most buyers this is the sensible one.

Bosch GWX18V-50PCN 18V X-LOCK Angle Grinder with No Lock-On Paddle Switch - it depends

The Bosch GWX18V-50PCN is the one with the most going on electronically and the biggest string attached. Bosch publishes an unusually specific list of behaviours: KickBack Control that helps shut the tool off if the wheel binds, restart protection that helps prevent accidental startup if the supply of power is interrupted, drop control that shuts the grinder off after it is dropped, an X-Brake for a rapid stop when the switch is released, and soft start. The switch is a no-lock-on paddle, and the auxiliary handle is a Vibration Control unit, though Bosch publishes no vibration number to go with it. The tool is listed at 4.5 lb bare, 9,000 no-load RPM, 5/8-11 UNC spindle, sized for 4-1/2 to 5 inch wheels, and connected-ready through an optional module. The catch is X-LOCK. Wheels snap on and release with a lever, up to five times faster than a threaded nut, but only X-LOCK wheels fit, so a drawer of ordinary 7/8 inch bore discs becomes useless with it. Right for someone on 18V rebuilding their abrasive stock anyway, wrong for anyone who is not.

DEWALT DWE402 4-1/2 in. (115mm) Small Angle Grinder - skip

The DEWALT DWE402 is a perfectly competent 11 amp, 11,000 RPM grinder that DEWALT undermines with one component. Look at page 6 of DEWALT’s own instruction manual, which covers several variants at once: item K is the lock-on button, and it is listed for the DWE402 and DWE402G but not for the DWE402N. Push the lock-off lever back, squeeze the paddle, press the button, and the tool keeps running with your hand off it. Against that, DEWALT’s published feature list for this model names no restart protection and no brake, and neither the US product page nor the manual carries a vibration figure in m/s2 or a noise figure in dB(A). The manual itself is good, with clear guidance that a Type 1 guard must be used for any wheel where surface grinding is forbidden and a warning that side forces on a cut-off wheel may cause it to shatter. The tool is not the problem; the version is. DEWALT already sells the DWE402N with the same motor and no latch, which makes this one hard to recommend to anyone.

Metabo WEPBA 17-125 Quick RT DS Angle Grinder vs Makita GA5053R 4-1/2 in. / 5 in. Paddle Switch Angle Grinder with Non-Removable Guard: which should you buy?

The Metabo and the Makita are both built around the idea that the tool should protect you when you stop paying attention, but they spend their money in opposite places. Metabo spends it on measurement and stopping. You get vibration and noise figures on the spec sheet, a mechanical brake described as stopping the disc in 2 seconds even during a power failure, a torque limiting clutch for a jammed disc and an autobalancer, all wrapped around a 14.5 amp motor. Makita spends it on prevention. There is no brake and no published measurement, but the guard is designed not to come off, the switch has no lock-on and needs a two-stage lock-off to start, and the manual documents restart protection. One tool assumes something will go wrong and shortens the consequences; the other assumes people take shortcuts and removes the shortcut.

Choose on how you work rather than on the spec count. If you grind or cut for hours at a stretch, take the Metabo, because a published 6.1 m/s2 lets you reason about trigger time and an unpublished figure does not, and because a wheel that keeps spinning after you release the paddle is a hazard every single time you set the tool down. If the grinder gets shared, lives in a truck, or gets handed to someone less experienced, take the Makita, because the guard cannot be left behind on the last job and the switch cannot be latched on. Either way, pair it with proper eye protection, see our safety glasses and hearing protection picks, and something on your hands from the work gloves comparison.

What to look for

• Read the switch line, not the amp rating: the maker’s spec table will say whether there is a lock-on button, and the lock-on version is usually a different model number from the same maker.
• Look for restart protection by name: Metabo, Bosch and Makita all publish it under their own terms, and a tool that does not name it should be assumed not to have it.
• Check whether the brake is mechanical: Metabo says its disc brake stops the disc in 2 seconds after release even during a power failure, which an electronic brake that needs power cannot promise.
• Compare the tool’s no-load speed to the wheel’s marked speed: a 115 mm wheel is typically marked 13,300 rpm and a 125 mm wheel 12,200 rpm at the usual 80 m/s, so a 12,000 RPM tool leaves very little margin.
• Budget for the cutting guard separately: the open guard in the box is a Type 27 grinding guard, and the closed two-sided Type 1 guard needed for cutting wheels is usually a separate part number.
• Treat a published vibration figure as a feature, not a warning: almost nobody prints one for the US market, and the number you cannot see is not smaller than the number you can.

Our final take

Buy the Metabo WEPBA 17-125 Quick RT DS if you use a grinder seriously. It is the only one of these four that publishes the numbers governing how long you can hold it, and the only one whose brake is described as working through a power cut. Buy the Makita GA5053R if you want the same care applied to prevention instead: a guard that stays on, a switch that cannot be latched, and restart protection documented in the manual. Take the Bosch GWX18V-50PCN only if you are already on 18V and are willing to standardise on X-LOCK wheels. Skip the DEWALT DWE402, not because the motor is poor but because DEWALT sells the identical DWE402N without the lock-on button, and with no published restart protection the latch is the wrong side of a real hazard.

More Tech & Gadgets reviews

The Best Bench Vises: 4 Compared (and One to Skip) The Best USB Bluetooth Adapters: 4 Compared (and One to Skip) The Best Bluetooth Item Trackers (2026): AirTag-Style Finders, Honestly Compared Best Budget 1440p Gaming Monitors (27", Under $350): What's Actually Worth It The Best Budget Laptops for Everyday Use: 4 Compared (and One to Skip) Best Budget Mechanical Keyboards ($50-120): The 3 Worth Buying and 1 Popular Pick to Skip