Stainless steel diffusion stones with barbed fitting, fits 1/4" I.D. tubing. Use 0.5 micron for perfectly carbonating your beer in keg with co2.

For use with any Sanke coupler (A-Type, D-Type etc.) Allows versatility in what kegs you can use, by converting your couplers to 5/8" ball lock posts. Attach ball lock disconnects to your taps for easy quick change between kegs. This is for gas only, the identifying difference is engraved band around the post. A Gas Ball lock will only fit on a gas post. Features: - 304 Stainless Steel - Complete plug and play - Complete with seals, poppet & spring

These ball lock posts include a 1/4" BSP thread so you can attach it to a wide range of other fittings. The posts include a 20mm long thread, an o-ring, poppet, locking nut and short dip tube.