Description: Tire Air Chuck Inflator Valve Connector with Lock Made of high quality Brass ,longer lasting life . Before installing the new air chuck, apply grease on the base to avoid damage. Helps to keep the tire pressure in a normal condition. Easy to install , simple to use. Specification: The Large hole diam.: 7mm/0.3 inch The small hole diam.: 5mm/0.2 inch Package Includes: 1 Piece Air Pump Chucks