SUP electric pump adaptor utilizes a standard Schrader fitting to couple with an air compressor or bike/tire pump. With the in the closed position, insert the Schrader fitting and rotate to lock in place. Remove the on the fitting, and connect a standard electric pump. Features - Color: Sky blue. - Material: Rubber & copper. - Size: 3.4 x 3.4 x 7.8 cm. - SUP electric pump adaptor utilizes a standard Schrader fitting to couple with an air compressor or bike/tire pump. - With the in the closed position, insert the Schrader fitting and rotate to lock in place. Remove the on the fitting, and connect a standard electric pump - Bike pump or compressor and inflate to the recommended PSI - 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 off the pressure. - Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you!Package list: 1 x Air Pump Adapter