5-in-1 Design: 1 Rowing Air Valve Adapter + 4 Standard Regular Air Valve Attachments. 4 x standard conventional air valve accessories can meet the inflation requirements of most equipment. With it, you don't need to buy another connector. High Quality Material: Made of high strength hard plastic and alloy material, strong structure, high pressure resistance, strong sealing, anti-leakage, alloy stem end provides strong sealing leakage protection and long-lasting use. Wide Applications: The Marine Air Valve Adapter Kit fits most paddleboards, canoes, kayaks, jet skis, jet skis, flush pools, floating rows, inflatable beds, and more. Easy to Convert Quick Inflate: Easy to inflate and deflate. The use is very simple, first select the appropriate connector according to the inflatable interface. Then use a compressor or tire pump to easily reach the recommended PSI in 5-10 minutes. The bigger the inflator pump you use, the faster it will inflate.