air valve inflatable is made of high-quality, high-density ABS plastic, which is strong, corrosion-resistant and durable. The air valve cap design is sealed ensures anti-leak . The upside diameter/length of Threaded part is 22mm (out)/ 17mm(inner), the underside diameter/length of Threaded part is 22mm (out)/ 20mm(inner). check size to make whether your valve bung fit this plug purchase. It will fit into a hole that is about 20mm/0.78 inch, boston valve to help quicker and deflation. Easy to fit, good performance and long life. Good replacement accessory for your inflatable boat. Fits most inflatable boat, raft, rubber dinghy, etc. pay attention to the size purchase, and nozzles are not all suitable for all sizes of airbeds and inflatable boats, size , like netted . Colour:black :plastic Package Contents: 10 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.