Easy to Use : Inflatable Boat Pump Adaptor is easy to inflate and deflate. When the valve is in the closed position, insert the valve and rotate to lock it in that position. Open the valve cover, and connect the electric pump or manual pump to inflate. Since it takes some time to inflate the compressor/tire pump, it is necessary to inflate the circuit board by hand until it is difficult to pump the air. Then use an adapter to convert the pressure.Fast inflate : Universal valve adaptors is quickly inflated and easy to change. Using an electric paddle pump or tire air pump.Lightweight and Portable : This air sup pump adaptor is lightweight, small size, easy to carry and store. One will meet different types of inflatable tools. Reduce your burden.Widely Use : Universal inflatable pump adaptors don't need paddle-specific air sup pump, the conversion head can connect the ordinary inflatable tube to the paddle. Not only used as kayak accessories,but also widely applicable for Inflatable Boat/Stand Up Paddle Board/Inflatable Rowing Boat/Inflatable Bed etc.Delivery Quantity: 2pcs,Package Contents: Only the above package contents, excluding other products.Size: about 8cm in length, about 3.5cm in diameter(Reminder: The size is measured manually, please allow 1-2 cm measurement error)Color: black+gray(Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.)