Street & Strip Clutch Kit1955-1979 GM11 in. Dia.1 1/8 in. x 10 SplineRated at 600 HPIncludes:Diaphragm Pressure plateCeramic Clutch DiscThrow-Out BearingPilot BushingAlignment Tool JEGS 61910 Street & Strip Clutch Kit for 1955-1979 GM vehicles is ideal for both street and track use. The unique dual face ceramic clutch disc and high clamp load diaphragm pressure plate combination provide smooth engagement and impressive holding power for cars up to 600 crank Horsepower with moderate engine modifications and street tires.Features:High Clamp Load Diaphragm Pressure PlateDual Face Ceramic Clutch Disc with Sprung HubMechanical Throw-Out BearingOilite Bronze Pilot BushingPlastic Alignment Tool