For removal and installation of oxygen sensors, oil pressure sending units and vacuum switches Variety of sizes and styles for use on most domestic and imported vehicles Made of high-quality chrome vanadium and chrome moly steel For use with 3/8" and 1/2" Drive ratchets Includes: (1) 1/2" Drive 29mm x 90mm Oxygen Sensor Socket (1) 3/8" Drive 7/8" x 90mm Oxygen Sensor Socket (1) 1/2" Drive 27mm x 79mm Fuel Injector Socket (1) 3/8" Drive 7/8" x 80mm Vacuum Switch Socket (1) 3/8" Drive 1-1/16" x 74mm Oil Sending Unit Socket (1) 1/2" Drive 7/8" x 50mm Oxygen Sensor Socket (1) 3/8" Drive 7/8" x 30mm Offset Oxygen Sensor Wrench (1) 1/2" Drive 22mm Special Tube Socket (1) 2-1/8" Offset Oxygen Sensor Wrench (1) 1/2" Drive Deep Oxygen Sensor Socket (1) Oxygen Sensor Thread Chaser