Inflatable Boat SUP Pump Adaptor Air Pump Converter Standard Conventional Pump Adaptor Air Valve Adapter Pumping Head Connector for Inflatable Rowing 2-pack! ! Material: black + gray copper + rubber orange + gray roof prism, BAK4 material, size: black + gray about 8cm in length, about 3.5cm in diameter, about 1cm in error Easy to use: With the valve in the closed position, insert the American valve fitting and rotate to lock in place. Remove the cap on the connector and connect the standard electric pump. Since it takes time to inflate the compressor/tire pump, it is recommended to inflate the board by hand until it becomes difficult to inflate, then use the adapter to replenish the pressure. Quick Inflation: This inflatable SUP valve adapter is easy to convert and has high inflation efficiency. Easily reach the recommended PSI in 5-10 minutes using your compressor or tire pump. Light and Portable: With fine workmanship and exquisite design, it is easy to use. Lightweight and portable, individually sealed packaging, easy to use and carry. Universal Valve Adapter: There is no need for a special air pump for the paddle, and the conversion head can connect the ordinary inflation tube to the paddle. Widely used in all kinds of canoes, kayaks, paddle boards, inflatable boats, etc.