Makita GA4570 X-LOCK Angle Grinder vs Makita 9557PB Angle Grinder

Both grinders run the same 7.5 amp, 11,000 RPM motor, so cutting and grinding power is a wash. The GA4570 adds X-LOCK tool-free wheel changes and a slide switch with lock-on, while the 9557PB is lighter, shorter and uses a large paddle switch with a push-button spindle lock. Buy the GA4570 if you change wheels often or share the tool across jobs; buy the 9557PB if you want a lighter, simpler grinder for one-handed work and standard 5/8-11 accessories. Owners rate the 9557PB well and call it reliable for the money; the GA4570's 47 ratings average 4.2, with the X-LOCK mount being the main talking point.

• Choose the Makita GA4570 if you swap between cutting and grinding wheels all day and want tool-free X-LOCK changes plus a lock-on slide switch.
• Choose the Makita 9557PB if you want a lighter, shorter grinder with a big paddle switch and standard 5/8-11 spindle threads for common accessories.