Features: 1.Material:made of high-quality rubber material, which is waterproof, oil-resistant, wear-resistant, impact-resistant, Freon-resistant and corrosion-resistant. 2.O-ring seal kit for Automotive A/C 1/4" port. 3.Replacement gasket help you keep your charging hoses and adapters in top working condition. 4.Used for A/C 1/4" charging hose / manifold repair, replacement kit, suitable for most cars, trucks, motorcycles, etc. Notice: Conical design, requires the use of the larger diameter end to connect properly. Package include: 100 x Hose Gaskets .