Repair Kits generally consist of wear parts such as o-rings, springs & veins For Use With 3/8" Pneumatic Butterfly Impact Wrench 5540003469JP (6) Rotor Blades 40116 Back Cap Gasket 40123 (2) Plunders 40125-12 O-Ring 40126 Snap Ring 40128 Retainer Plate 40137 (2) Valve Seats 40141-12 (2) Valve Springs 40142 (2) Short Cap Screws 40143