This high-pressure adapter allows you to get the most out of inflatable SUPs. This adapter allows you to use an air compressor to effortlessly inflate your SUP to the desired PSI. An inflatable SUP performs significantly better if inflated to the recommended PSI, ensuring you get the most out of your SUP. The Slingshot High Universal High-Pressure Inflation Adapter fits the Halkey Roberts valve. The best way to determine if the Slingshot Inflation Adapter will work with your inflatable SUP is to check with a professional. The Slingshot HP SUP Inflatable Valve is compatible with most major brands.