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 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 nozzles are included, designed to save space. WIDE APPLICATION: Fits most paddleboards, canoes, rubber boats, inflatable kayaks, dinghies, inflatable beds, pool floats, and other inflatable water products. 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), Heliciform head: 0.78 in (20 mm) Package List: 1 x Air Valve Adapter