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 to reach up to 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. Compatible with standard Schrader valves, allowing connection to most air compressors or bike/tire pumps. Ideal for use without the need for a specialized rubber boat pump. Note: Upon opening, please check carefully—4 nozzles are included, nested together to save space. WIDE APPLICATIONS: Fits most paddleboards, canoes, inflatable boats, kayaks, dinghies, inflatable beds, pools, rafts, and other inflatable water gear. 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 Includes: 1 x Air Valve Adapter