Great value: Valve caps built in valve removal slot for easy installation and removal of valve core. Specifications: About valve caps: Material: copper Features a remove valve core design on top.Rubber O-Ring for Airtight Seal(create a tighter, more effective seal, so there's no air leaking on long, tough drives.) Universal fit cars motorcycles bikes trucks suv etcColor: Silver, gold Size: 15 x 8 x 8mm/0.59 x 0.31 x 0.31" weight: 2.2g/pcs About valve core:Material: copper, nickel-platedDesigned with a seal attached to a movable, spring-loaded pin that allows pressurized air to pass when inflating a tire.Accepts working air pressure up to 300 PSI.Designed for use in any car, truck, motorcycle, bicycle, ATV along with any other vehicle that utilizes tires. Package: 4 pcs valve caps and 10 pcs valve core