Corded, Die Grinder, 1/4 in, 1/8 in Collet Size, 4.5 A, 21,000 RPM/ OVERALL LENGTH: 13.500 INCHES NOMINAL CURRENT TYPE: AC OR DC ALTERNATING CURRENT RATING IN AMPS: 4.5 FREQUENCY RATING: 60.0 HERTZ NOMINAL ACCESSORY COMPONENTS AND QUANTITY: 1/4 IN. COLLET VOLTAGE RATING: 120.0 VOLTS NOMINAL UNIT TYPE: DIE DRIVE END TYPE: COLLET CHUCK NO LOAD SPEED IN RPM: 21000.0 MAXIMUM DRIVE FOR WHICH DESIGNED: STRAIGHT FEATURES PROVIDED: DOUBLE INSULATED AND PADDLE SWITCH PHASE: SINGLE SPECIAL FEATURES: 2 IN. REINFORCED WHEEL, 1-5/8 IN. NON-REINFORCED WHEEL CAPACITY