SUPERIOR QUALITY: Made of solid brass and chrome plated for added durability and corrosion resistance, with silver clips, carefully crafted with a smooth, clean finish. PRECISION DESIGN: Heavy-duty spring clips ensure a quick, precise seal, and the integrated skirt prevents air leaks at pressures up to 25 kg. EASY TO INSTALL AND REMOVE: Fits 8mm diameter hole hoses, ideal for inflating tires and easily attaching tire chucks to valve stems. After the tire is inflated, release the collar, push the collar down, press and rotate the valve ring into the valve stem until it is snug. Used: Ideal for contact with all types of vehicle tires. Suitable for air pumps, 4S workshops, tire shops, garages and industrial air duct systems. Package contents: 2 x Universal Air Pump Valve Connectors, Dimensions (Approx.): Length: 40mm/1.57in, Aperture: 0.8 cm/0.31 inch.