Barrow G1/4" to 14mm Hard Tubing Compression Fitting (For Use with Barrow Rigid Tubing Only), Black, 4-pack Go to amazon.com Related posts The 6 best barrow cpu waterblock for 2022 FeatureFitting for PC water cooling application14mm Multi-Link FittingHigh Quality Nickel-plated BrassThread: G1/4"Color: Black DescriptionBarrow G1/4" to 14mm Hard Tubing Compression Fitting, Black Model: TR-TYKN-K1410 V4-4P.