Reinforced Kit - 200-400% Increase in holding capacity.This Kit is a Dual Diaphragm… the different between the stage 5-6 and the reinforced kit is the number of diaphragms on the pressure plate which increases the clamping force.Package Includes: Stage 6 Metallic Rigid Friction Disc / Heavy Duty Pressure Plate / Release Bearing / Alignment Tool / Pair of Action Clutch Stickers / Action Clutch Lanyard Keyring.