Premium quality: Made of solid brass and chrome plated for durability and corrosion resistance with silver clips Well-designed with a smooth, clean surface. Precise design: Strong spring clip gives a quick and easy seal precise, integrated apron prevents air leakage, pressure up to 25 kg. Easy to attach and remove: Suitable for 8mm diameter pore pipe, very suitable for inflating tires effortlessly to attach the tire chuck to the valve stem. Loosen the clip when your tire is inflated, push the clip down, press and twist the air valve liner into the valve stem until snug. Occasions: Ideal for accessing all types of vehicle tires. Suitable for air pumps, 4S workshops, tire shops, garages and industrial air duct systems. Package contents: 2 Pieces of Universal Air Pump Valve Connector, Size(Approx): Length: 50 mm / 1.96 inch, aperture: 0.8 cm / 0.31 inch. lucky meet