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 to a portable air compressor until reaching 14 PSI. This method provides an efficient and economical inflation solution without requiring a dedicated paddleboard air pump. MULTI-PURPOSE DESIGN: Includes 4 different nozzle types. Eliminates the need for a specialized rubber boat pump. Features a standard Schrader valve fitting compatible with most air compressors or bike/tire pumps. Note: Upon opening, the nozzles may appear nested together4 nozzles are included, designed to save packaging space. WIDE APPLICATION: Compatible with most paddleboards, canoes, rubber boats, inflatable kayaks, dinghies, inflatable beds, floating docks, pools, and other inflatable watercraft. If compatibility issues arise, please reach out for support. Material: PVC + Alloy Color: Red / Blue Nozzle Sizes: Round Head 0.62 in (16 mm), Sharp Head 0.23 in (6 mm), Square Head 0.71 in (18 mm), Helicoidal Head 0.78 in (20 mm) Package List: 1 x Air Valve Adapter