VTKLS5 kit contains:
1511ML-16 - Conical Valve Springs (spring pressure 140lbs @ 1.780" and 330lbs @ .500" lift)
10707-16 Retainers
10702-16 Valve Locks
VSV900-8 – Inlet Valve Stem Seals and VSV901-8 - Exhaust Valve Stem Seals
VTKLS5 Spring Kits are suited for mild-hot street LS Roller Camshafts if you prefer single Beehive Valve Springs. It will take a maximum lift of .600"