The top screw portion with cap for the new inflate/deflate screw valve Boston XL uses on their kites 2015 and later. (This valve cap is also compatible for Naish 2015 and later kites, and RRD kites with the large screw valve.).
The cap is made of the highest quality ABS material, sturdy, anti-corrosion and durable with a fine design that ensures anti-leak inflation. It is good for the replacement of your inflatable boat, kitesurf, kayak, airbed, canoe, pool raft, rubber dinghy, etc.
The product does NOT include the base or Stick-on patch. This WILL NOT WORK in the old Airlock valve base (Cabrinha Airlock with old-style cap, pre-2014).