High-Quality MaterialsThis SUP pump adapter is made from high-quality copper and rubber. It is quite sturdy and durable. The SUP Electric Pump Adapter uses a standard valve fitting to pair with an air compressor or bike/tire pump. Easy to UseWith the valve in the closed position, insert the valve fitting and twist it 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, and then use the adapter to complete the inflation. Quick InflatationThis inflatable SUP valve adapter has easy conversion, and the efficiency of its inflation is quite high. Use your compressor or tire pump to easily reach the recommended psi in less than 5-10min.