PKS ProFlow Screw Valve With Velcro, works on Ocean Rodeo, Airush, Naish, Star, RRD, Switch Kites with Large Boston Style screw Valve.  This is for the leading edge to replace your inflate/deflate valve.

Fixmykite.com's Self-Stick Valves will stick on all bladders. Simply peel and stick to make a fast and easy repair on an old bladder or attach to a brand new bladder. The specially formulated adhesive is incredibly durable making for a permanent repair. Everything needed for installing the new valve is included in the package: alcohol wipe and detailed instructions.