Precision Comfort Premium Extended Vacuum Valve Kit Kit contains: Precision Comfort® Premium Extended Vacuum Valve (pack of 3) Precision Comfort® Premium Quick Disconnect Swivel Brush Vacuum Cleaning 9” O-Ring, Viton, .489 I.D. X .070 Width O-Ring, Viton, .447 I.D. X .052 Width (pack of 2) O-Ring, Viton, .426 I.D. X .070 Width