The Milwaukee Tool M18 FUEL 4-1/2"/5" Grinders, Nos. 2880-20 and 2881-20, are available with paddle switch, no-lock and slide switch, lock-on options. The grinders are designed to generate 11A corded power and deliver 8,500 rpm. In addition, both grinders feature the company's proprietary Powerstate brushless motor, Redlithium battery pack, and Redlink Plus intelligence. For ease of use, the grinders include tool-free adjustable guards and accessory changes to provide quick guard installations and adjustments. FIXTEC Nut technology allows for tool-free accessory changes while remaining compatible with the most common accessories on the market today, the company says.