The Ozone Big Boston (Screw) Inflate/Deflate Valve will replace the inflate/deflate on 2011 and newer Ozone Kites. This valve will also work to replace the Max Flow Valve from Liquid Force. Fixmykite.com Self-Stick-Valves will stick on all bladders. Simply peel and stick to make fast and easy repair, or stick it on any new bladder. Specially formulated adhesive is incredibly durable and will stick on any bladder material or color.
The "Add Velcro" option is for us to adhere velcro to the top of the base of the valve. This part of the valve goes on the inside of the kite casing, and the purpose is to help the bladder not twist when tightening the screw-cap. The velcro is optional because you can still tighten it and hold valve in place without velcro, but the velcro is an added convenience that makes it like the original valve.