High Quality Materials: This SUP Pump adapter is made of high quality copper and rubber materials, it is quite sturdy and durable. SUP electric pump adaptor utilizes a standard valve fitting to couple with an air compressor or bike/tire pump. Easy to Use:With the valve in the closed position, insert the Schrader valve fitting and rotate to lock in place. Remove the cap on the fitting, and connect a standard electric pump.Because the compressors/tire pumps take time to inflate, it is recommended to inflate the board by hand until it becomes difficult to pump, and then use the adaptor to top off the pressure. Quick Inflation: This 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 suggested PSI within 5-10min. Lightweight Portable: Adopt fine workmanship and delicate design, convenient to use. Lightweight and portable, individual sealed package, easy to use and carry. Universal Valve Adapter:Widely applicable to various canoe, kayak, paddle board, inflatable boat etc. Fits all Halkey Roberts H3 Inflation Valves and Wakooda, Wahoo, Tower, Red Paddle, Isle Explorer, SeaEagle, Hala and Sevylor Board Valves. Pl check size before purchase.