HIGH-QUALITY MATERIAL: Made from high-strength hard plastic and alloy, featuring a solid structure, labor-saving design, high-pressure resistance, and strong seal leak protection. Note: The air valve adapter is only suitable for hose fittings. EASY INFLATION PROCESS: Use a manual SUP pump to inflate the board to approximately 3 or 4 PSI, then connect a portable air compressor to reach up to 14 PSI. This method provides an efficient and cost-effective inflation solution without requiring a dedicated paddleboard air pump. MULTI-PURPOSE DESIGN: Includes 4 different nozzle types. Compatible with standard Schrader valves, allowing connection to most air compressors or bike/tire pumps. Note: Upon opening, the nozzles may appear nested together—4 pieces are included, designed to save packaging space. WIDE APPLICATION: Fits most paddleboards, canoes, rubber boats, inflatable kayaks, dinghies, floating docks, inflatable beds, pools, and other inflatable water products. If your paddleboard is not compatible, please verify the valve type. Material: PVC + Alloy Color: Red / Blue Nozzle Sizes: Round Head 0.62in (16mm), Sharp Head 0.23in (6mm), Square Head 0.71in (18mm), Helicoidal Head 0.78in (20mm) Package List: 1 x Air Valve Adapter