Black Delrin Full Cover Cap for 1/8″ BSP and M10 x 1 High Pressure Fill Valves. Covers valve and bonded seal washer (Need the bonded seal washer to get height for cover to engage properly if using on a valve see picture. Won't work on a FX Air Rifle for example) completely for a sleek custom look.
Valve not included.
These will work great on Foster Male to G1/8" BSP Female Adaptor's