5 in 1 design: 1 rowing boat air valve adapter + 4 conventional air valve attachments. 4 conventional air valve fittings to meet the inflation requirements of most equipment. With it, you don't need to buy other connectors. High Quality Material: Made of hard plastic and alloy, it has strong structure, high pressure resistance, strong sealing, anti-leakage, alloy valve end provides leak protection and durable use. Wide Application: The boat air valve adapter kit is suitable for most paddle boards, canoes, kayaks, powerboats, powerboats, swimming pools, floating platoons, inflatable beds, etc. Easy conversion and quick inflation: Easy to inflate and deflate. The operation is very simple, first select the appropriate connector according to the inflation interface. Then use a compressor or tire pump to easily reach the recommended psi in 5-10 minutes. The larger inflation pump you use, the faster the inflation. Convenient: Lightweight and portable, easy to carry and store. No need to carry different kinds of inflatable tools. Reduce your burden. Features: CONVENIENT: This air valve adapter makes the inflator compatible with your inflatable boat or board. With soft rubber, it has good airtightness. The valve adapter can be connected directly to a normal cylinder without the need for an air pump dedicated. SUP Pump Adapter uses a standard Schrader fitting to couple with an air compressor or bicycle/tire pump. With the valve in the closed position, insert valve fitting and twist to lock. Specifications: Material: nylon and alloy. Weight: 76 g. Color: Black and Red. Size: see the detailed picture. Package: 1 rowing boat air valve adapter. 4 air valves.