Material: The SUP pump adapter is made of high-strength hard plastic and alloy, which can withstand strong air pressure without deformation, is pressure-resistant, sturdy and durable, and has a strong sealing and leak-proof ability. Fast inflation: Inflatable SUP valve adapter, fast inflation, use your compressor or tire pump to easily reach the recommended PSI within 5-10 minutes. The larger the air pump you use, the faster the inflation speed. Uses: Suitable for most high-pressure air valve equipment, no need to carry different types of inflatable tools, easy to use, widely used in all kinds of kayaks, inflatable boats, inflatable boats, and small boats. How to use: This paddle board adapter closes the valve, inserts the Schrader valve fitting and rotates to lock it in place. Remove the cover on the accessory and connect the standard electric pump. Since it takes a certain amount of time to inflate the compressor/tire pump, you need to inflate the circuit board by hand until it is difficult to pump the air, and then use the adapter to convert the pressure. Portability: This SUP pump adapter is exquisitely designed, and the multi-function valve connector meets all your needs. It is lightweight and portable, reducing your burden. Color: black + gray Material: copper + rubber Size: length about 8cm diameter about 3.5cm error about 1cm Weight: 40g Package includes: 1pc * rowing air valve conversion head