Air-Powered, Drill, General Duty/ OVERALL LENGTH: 6.375 INCHES NOMINAL HANDLE TYPE: PISTOL GRIP HOSE INSIDE DIAMETER FOR WHICH DESIGNED: 0.375 INCHES NOMINAL AIR INLET NOMINAL THREAD DIAMETER: 0.250 INCHES NOMINAL CHUCK SIZE: 0.375 INCHES HORSEPOWER RATING: 0.500 DRIVE END TYPE: KEYED JAW CHUCK NO LOAD SPEED IN RPM: 2000.0 NOMINAL DRIVE FOR WHICH DESIGNED: STRAIGHT FEATURES PROVIDED: REVERSIBLE AND VARIABLE SPEED SPECIAL FEATURES: HEAVY DUTY