Description: Complete set of O-Ring and Air Valve for airbrush Precision engineered tool for professionals and hobbyists Large Screw Thread Diameter: Approx. 9.5mm Small Screw Thread Diameter: Approx. 7mm Total Length: Approx. 22mm Material: Metal colour: silver Package Contents: 3 x Air Valve Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.