Monsoon G1/4" to 1/2" ID, 5/8" OD Chain Gun Hardline Compression Fitting (for Use with Monsoon Rigid Tubing Only), Red, 4-Pack Compression fitting with bold new look Precision machined entirely from marine grade brassincluding the compression ring High quality premium silicone O-rings G1/4" Thread Available in a variety of colors and finishes to match with other Monsoon water cooling products