Milwaukee 2939-20 18V Die Grinder is designed with spindle lock and slide switch. Grinder brake stops cutting and sanding with 2 seconds or less. Compatible with all 1/4" shank accessories. Delivers up to 12" of weld bead removal with an 18V 5Ah Battery (not included). Features 27,000RPM motor and is 2" accessory sanding and cutting wheel compatibility.