The breathers are sintered bronze filters with a 1/4" thread
and the bracket is a 1/4" manifold with 4 inlets/outlets
I got them all from a pneumatic shop near the coburg drive-in
the filters allow air to flow though easily but not water.
most diff breather kits on the market use the little blue air silencers (also from a pneumatic supplier )
the 2 x filters, 2 x 9mm airline stems and manifold cost me under $30.
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