Product Specifications: Contains 2 car valve stem connectors. Dimensions: Length 40mm, lever connector interface 8mm. Sturdy Material: The connector is made of brass, which is durable and corrosion-resistant, and comes with a silver clip for better control. Universal Adjustable Connector: The 8mm end is designed to be compatible with 8mm hoses of various vehicle tire inflators (such as bicycles, motorcycles, car tires, etc.). Easy to use: no additional tools are needed, directly attach the hose to the collet, press the clip down, screw the car valve stem connector into the valve stem until it is tight. After confirming the tightness, loosen the lever connector.