Black POOL 8 BALL Valve Caps For Tires and Wheels, Standard Fit, Set of 4 Black POOL 8 BALL Valve Caps For Tires and Wheels, Standard Fit, Set of 4 Will make your ride stand out from the rest. Universal: Fits cars, trucks, bikes with a standard valve stem. High-Impact Plastic "8" Ball. Easy install - No tools required.