Made of solid brass and iron material, durable in useDescription: These valve stems are a great replacement for your rubber valve stems. They are made from solid brass and have an iron nut. They are extremely durable and will not crack or deteriorate due to weather conditions. Comes with EPDM rubber O-ring seal, it can effectively prevent leakage. It is really a handy tool. Specifications: Material: Solid Brass Body, Iron Nut, EPDM Rubber, O-Ring Seal Color: Silver + Black Size: 1.3 x 4.1cm / 0.51" x 1.61" Color: Black, Silver, Gold Style: Screwed-in Quantity: 4 pieces Package Weight: 82g Fitment: fit in a normal valve stem hole of 0.453". Package include: 4 x Tire Valve Stems Note: 1. Please allow 1-3cm error due to manual measurement. Thanks for your understanding. 2. The monitors are not calibrated the same. The item color displayed in the photos may be showing slightly different from the real object. Please take the real one as the standard. Tubeless high pressure tire valve detent valves for cars Comes with EPDM rubber O-ring seal, it can effectively avoid leakage Will not break or deteriorate due to weather conditions Bolt-in style, easy installation