HIGH-QUALITY MATERIAL: Made from high-strength hard plastic and alloy, featuring a solid structure, labor-saving design, high-pressure resistance, and strong sealing for leak protection. Note: The air valve adapter is only suitable for hose fittings. EASY INFLATION & TIME SAVING: 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 process without requiring a dedicated paddleboard air pump. MULTI-PURPOSE USE: 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, bike pumps, or tire pumps. Note: Upon opening, please check carefully – all 4 nozzles are included, nested together to save space. WIDE APPLICATION: Fits most paddleboards, canoes, rubber boats, inflatable kayaks, dinghies, floating docks, inflatable pools, air beds, and other inflatable water products. If the adapter does not fit your paddle board, please directly. Material: PVC + Alloy Color: Red / Blue Nozzle Sizes: Round Head 0.62in (16mm), Sharp Head 0.23in (6mm), Square Head 0.71in (18mm), Helical Head 0.78in (20mm) Package List: 1 x Air Valve Adapter