PREMIUM MATERIUAL & GOOD SEALINGThe main body is made of high-strength PA66 rubber, and the joints are made of brass. It has good impact resistance, corrosion resistance and high temperature resistance, strong and durable, not easy to deform, and can be used for a long time. In addition, the adaptor has a strong structure and good airtightness, which can provide you with good leakage protection. INFLATABLES ADAPTERS KITYou will get a multifunctional pump converter with a spiral joint, it is suitable for most inflatable boats. With this universal pump adapter, you can easily inflate your own inflatable boat or other inflatable equipment EASY TO USE & FAST FILLINGDon't need any tools or professionals, you only need to connect the joint to the kayak and inflate directly with an ordinary inflator or on-board electrical pump. The inflation can be completed in 10- 15 minutes. It is very simple and easy to operate. PORTABLE UNIVERSAL CONVERTERSUP pump adaptor kit is small in size, light in weight, easy to carry and store, and does not take up much space. You can put it in your car or backpack, and you no longer need to carry other inflatable tools. WIDELY APLICATIONThis pump converter is very suitable for inflatable beds, inflatable boats, swimming rings, dinghies, rubber boats, etc. Specifications Material: Rubber + Brass Dimensions: View detailed picture. Color: Black Package Including: Rowing boat air valve adaptor*1