Die Grinder Kit, Voltage 12V DC, Max. Speed 24,500 RPM, Grinder Orientation Right Angle, Switch Type Paddle, Battery Capacity 5.0 Ah, (2) 2.0 Ah, Brushless Motor Yes, Cordless Tool Kit Contents (1) Bare Tool; (3) Batteries; (1) Charger, Accessory Free Tool Change No, Collet Guard Type None, Collet Size 1/4 in, Speed Ranges 0 to 24500 RPM, Minimum Speed 0 RPM, Number of Speed Settings 4, Lock-Off Switch Yes, Lock-On Switch Yes, Brake Type None, Anti-Restart Technology No