Description : Made of high quality PVC material and equipped with sealed ring - durable , long lasting and air - proof 6 holes , easy to inflate and to deflate Filter Screen at the bottom prevents the foreign matter getting inside Comes in three parts : an inside part , an outside part and valve Suitable for most inflatable boats , rubber boats , surfboards , kayaks and canoes , dinghy rafts and etc . Specification : Material : PVC Top Diameter : Approx . 60 mm / 2 . 36 inch Height : Approx . 47 mm / 1 . 85 inch Color : Gray Package Includes : 1 Piece Inflatable Boat Air Valve Note : Due to the differences between different monitors , the picture may not reflect the actual color . There is 2 - 3 % difference according to manual measurement , please check the size carefully before you buy the item .