Barrow’s 14mm OD rigid tube adapter fittings cleanly and safely link hardline tubing to water cooling components and parts using a series of o-rings with an easy to use push-in style connection. G1/4 threads make them easy to install into most water blocks, radiators and reservoirs. Perfect for use with Barrow 14mm OD Rigid Tubing! A great option for those looking to use hardline tubing in their build!