Function: 1 . 4 air nozzles: Round connector is suitable for inflatable beds, inflatable pools. Square connector is suitable for paddle boards etc. The screw joint is suitable for assault boats, kayaks, etc. The pointed connector is suitable for swimming on wheels, floating oars, etc. 2. Scope of application: Widely used for paddle boards, kayaks, rubber boats, assault boats, inflatable pools, floating rows, inflatable beds etc. 3. Assembly Necessity: The paddleboard air valve adapter can be used with a car air pump, conventional bicycle air pump. The multi-functional valve connector can meet all your needs. 4. Premium Material: Made of nylon, alloy and rubber, with solid structure, high pressure resistance and strong seal leakage protection. 5. Compact design: lightweight and portable, easy to carry and store, no need to carry various types of inflatable tools and reduce burden. Specification: Item Type: Vane Air Valve Adapter Product material: Nylon, alloy (inlet nozzle), rubber Application: Suitable for paddle boards, kayaks, rubber boats, assault boats, inflatable pools, floating rows, inflatable beds etc. Assembly required: use with a car air pump, conventional bicycle pump Product Size: Adapter Size: Approx. 3.5x7cm or 1.4x2.8 inch Air Nozzle Diameter: Approx. 2 cm or 0.8 inch Weight: Approx. 78g or 2.8oz 4 pneumatic nozzles: 1 . The round joint is suitable for inflatable beds, inflatable pools, 2. The square connector is suitable for paddle board etc. 3. The screw connector is suitable for assault boats, kayaks, etc. 4. The pointed connector is suitable for swimming, floating row etc. Package List: 1 x Adapter 3 x air nozzle