The Moose Valve is a new and very innovative Blowpipe Stock Valve. The Moose Valve comes with a 2 Year Guarantee. It is very easy to fit and remove using a tool provided and fits securely in position. Can be used in any type of bag set up and is fully adjustable from 3/4" - 7/8". Fits internal tapered bores with no requirement to ream or drill stock. The Moose Valve features a large bore for efficient air delivery and is 100% Airtight. Once fitted, the Moose Valves acts as a water trap which effectively collects excess moisture which can be tipped out at any time by simply removing the blowpipe.