Get back to the fun faster with this universal adapter. Inflate your towables, swim toys, beach toys, inflatable boats, rafts, airbeds and sport balls with an air compressor at home or at the gas station. It's tapered to fit all valves on all inflatables, including all sizes of stern and Boston valves, Halkey-Roberts and Leafield valves. The screw on tip creates a high-pressure stream of air Both the needle valve and the high-pressure tip stow securely in the handle 7 1/2"H x 4 7/8"W