Airtime 11mm Deflation/Dump Valve
The 11mm dump valve that doesn't really measure 11mm...as far as we can figure out. But hey, who's going to argue, this is the original fast deflate valve from the early 2000's and it's still being used now.
This dump valve is on a 4" diameter 'peel and stick' base. Use it to replace a failing valve on your kite bladder or to assemble a new bladder.