The Milwaukee Tool M18 FUEL 4-1/2" - 5” Variable Speed Grinders generate 11A corded power and feature five-speed settings between 3,500 rpm and 8,500 rpm, giving users ideal control by allowing them to slow down or speed up the accessory during grinding and cutting applications. The grinders feature a RAPIDSTOP brake for enhanced user safety, stopping most wheels in less than two seconds. The grinders are available with either a paddle switch (No. 2888-20) for increased comfort and ease-of-use when operating in various positions, or a slide switch (No. 2889-20) to reduce user fatigue. Additionally, the grinders offer tool-free guard adjustments to provide fast guard installations and adjustments.