Die Grinder 8.5 Amps No Load RPM 2 500 to 8 700 RPM Wheel Dia 3 In. Corded/Cordless Corded Collet Capacity 1/4 In. Handle Design Straight Bearings Double-Sealed Ball Bearings Switch Type Slide Features Variable Speed Electronic Speed Control 1/4 in Collet Aluminum Die-Cast Gear Housing High-Torque Planetary Gear System Auto-Stop Carbon Brushes Spindle Lock Soft Rubber Grip Side Handle Tool Length 14 In. Speed Type Variable Voltage 120VAC