【Quality Materials】: The inflatable valve adapter is made of high-strength hard plastic and alloy, providing a solid structure, ease of use, high pressure resistance and strong sealing ability to prevent leakage. Note: Metal wrench It is used to adjust the air core tightness and inflation speed. 【Efficient Inflation】: Using a compressor or tire pump, you can easily increase the pressure to the recommended PSI value in just 5 to 10 minutes. It is recommended to manually inflate the SUP board to about 3-4 PSI before connecting the air valve nozzle adapter to the compressor for fast inflation. The higher the pump power, the faster the inflation speed will be, saving you valuable time. 【Multifunctional】: The SUP pump adapter is equipped with 4 different valve nozzles. So you don't need to buy a special pump for canoes. The SUP adapter connects to an air compressor or a bicycle/tire pump via a standard connector. The clever design of the nozzles allows them to be nested inside each other,