Description: 100% Brand New and High Quality  Item Measure by hand, it could be 3cm different,your kind understanding will be much appreciated. Easy to attach and remove Suitable for garage and industrial air line systems use  Features: Fits all passenger and truck tire valves Heavy-duty brass construction allows for strength and durability. Suitable for use with garage and industrial air line systems. Open flow with a lock-on clamp make it easy for hands free tire inflation Connects to 5/16" ID hose found on many tire changers ，and contain stainless steel clamp Specification: Main Color: As the picture shows Valve Inner Diameter: 8mm Package included: 2pcs Air Chucks.