Skunk2 Alpha Valve Spring set of 16 for B VTEC Alpha Series Valve Spring Set; Seat Pressure 68 Lbs At 1.320 in.; Open Pressure 210 Lbs At 0.820 in.; Coil Bind 0.800 in.; Set of 16; Seat Pressure: 68 lbs at 1.320in.; Open Pressure: 210 lbs at 0.820in.; Coil Bind: 0.800in.