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The Milwaukee 2888-20 is a cordless 4-1/2 in. / 5 in. angle grinder with a brushless POWERSTATE motor that spins 3,500–8,500 RPM and five variable speed settings. It has a paddle switch with no lock-on, a RAPIDSTOP brake that stops the wheel fast, and tool-free guard and accessory changes. It runs on M18 REDLITHIUM HIGH OUTPUT batteries, which are sold separately. At $110.40 at eBay as of November 6, 2026, it is a bare tool, so budget for batteries and a charger if you are not already on the M18 platform.
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Lowest price we've seen: $156.99 on Nov 6 at Walmart. Tracked across 5 stores since Nov 6.
Owners rate it highly, at 4.7 out of 5 from 224 ratings. Most praise the power, the brake and the variable speed for cordless work. The main complaints are the cost of batteries and the weight with a large pack.
The MILWAUKEE® M18 FUEL™ 4-1/2" / 5" Variable Speed Braking Angle Grinder (Model 2888-20) with Paddle Switch (No-Lock) delivers the power and performance of an 11A corded grinder—without the cord. Designed for professionals who demand control, safety, and versatility, this cordless grinder features a POWERSTATE™ Brushless Motor that delivers 3,500–8,500 RPM and sustained power for the toughest grinding and cutting tasks. With 5 variable speed settings, users can fine-tune performance for a wide range of materials and applications. The RAPIDSTOP™ Brake enhances safety by stopping accessories quickly, while tool-free guard and accessory adjustments reduce downtime and increase efficiency on the jobsite. Powered by M18™ REDLITHIUM™ HIGH OUTPUT™ XC6.0 batteries (sold separately), this grinder runs cooler and delivers up to 50% more power than standard M18™ batteries. REDLINK PLUS™ Intelligence ensures optimal performance and protection from overloads, overheating, and over-discharge.
