Precision Comfort Premium Short Vacuum Valve Kit Kit contains Precision Comfort® Premium Short Vacuum Valve (pack of 3) Precision Comfort® Premium Quick Disconnect Swivel w/ O-ring, 1/2” 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