Specification:Material: CopperColor: Gold ToneOuter Diameter: 10mm / 0.39''Inner Diameter: 7mm / 0.28''Size: 4.4x1.8cm / 1.73''x0.71''(L*W)Feature:Function: Connection the tire valve to inflate the tire.Thumb press to lock, thumb-press tire chuck, easy and quick hands-free inflation.Made with high strength metal for maximum durability. Anti-corrosion, wear resistance, good performance and high stability.Connect the tail end of the thread diameter M8x0.8 inflating head product to the rubber hose of the inflating pump, and the inflating chuck mouth can be inflated.This adapter only suitable for inflator hose converting. Can't be connected to tire fill directly.Air Inflator Hose Adapter suitable for bike, motorcycle, car tire fill.Note:Please allow 1-2 mm difference due to manual measurement.