High Quality Materials This SUP pump adapter is made from high-quality copper and rubber. It is sturdy and durable. The electric SUP pump adapter uses a standard valve fitting to connect with an air compressor or bicycle/tire pump. Easy to Use With the valve in the closed position, insert the fitting and turn to lock it in place. Remove the cap from the fitting and connect a standard electric pump. Since tire compressors or pumps require time to inflate, it is recommended to inflate the board manually until pumping becomes difficult, then use the adapter to complete inflation. Fast Inflation This inflatable SUP valve adapter allows for quick conversion and highly efficient inflation. Use your compressor or tire pump to easily reach the recommended PSI within 5 to 10 minutes. Lightweight and Portable Designed with fine workmanship and a compact structure, this adapter is lightweight and easy to carry. Each unit comes in an individual sealed package for convenience. Universal Valve Adapter Compatible with various canoes, kayaks, paddle boats, and inflatable boats. Fits all Halkey Roberts H3 inflation valves and is compatible with valves from brands including Wakooda, Wahoo, Tour, Red Paddle, Isle Explorer, SeaEagle, Hala, and Sevylor.