Easy to Use:With the valve in the closed position, insert the 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 recommendedto inflate the board by hand until it becomes difficult to pump, and then use the adaptor to top off the pressure. 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. 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:No need for paddle-specific air pump, the conversion head can connect the ordinary inflatable tube to the paddle. Quantity: 2 pcs 1. Due to different measurement methods, there will be a deviation of 1-3 cm for the goods, please make sure you have no problem before ordering. 2. Due to different monitors and lights, the pictures may not reflect the actual color of the goods, thank you very much for your understanding. 3. Only the above package contents, excluding other products. Products from NIUNIU's store