Good materialValve adapter structure is strong and durable, long service life, rubber has good airtightness, seals material is copper, anti-leakage, can be used safely safety Easy to useWith the valve in the closed position, insert the valve fitting and twist to lock it in place. Remove the cap from the fitting and connect a standard electric pump. Because tire compressors/pumps take time to inflate, it is recommended to inflate the board by hand until it becomes difficult to pump, then use the adapter to complete the inflation Quick inflationThe air valve adapter allows the ordinary air cylinder to connect directly to the board, it full inflation in 5-10 minutes.Time is determined by the speed of the air pumpThere is no need for a special board air pump.Inflation can be achieved without the use of heavy inflatable tools, saving you a lot of time Lightweight and portablePortable Valve Adapter is easy to carry, without the need to carry different kinds of inflatable tools, dimensions: 7.8 x 3.4 Universal valve adapter Suitable to many canoes, kayaks, paddle boats, scuba boats umatics, etc. Fits all Halkey Roberts H3 inflation valves and Wakooda, Wahoo, Tour, Red Paddle, Isle Explorer, SeaEagle, Hala and Sevylor valves