Ocean Rodeo's screw valve used on kites and wings. This screw valve is for inflating the leading edge and struts on select wings. This valve is on a 4" 'peel and stick' base so that you can easily replace a faulty valve or assemble a new replacement bladder. The valve comes with a Velcro strip to hold the valve in place. NOT ALL OCEAN RODEO VALVES use the same Velcro. Some models use a hard Velcro (hook) on the valve and others use the soft Velcro (loop). You will need to check your kite or wing and select the correct Velcro from the drop down.