EK WB Quantum Torque HDC12 Compression Fitting for WB Rigid Tubing 12mm OD Black 4Pack

eKTorque HDC 12 Black fittings are eKs new minimalistic 12mm hardtube compression fittings designed for use with solid tubing such as Acrylic and PeTG They can be complemented by interchangeable aesthetic color rings and are an ideal choice for anyone and a perfect match with eKQuantum series products aesthetic rings are sold separately The locking ring prevents solid tube to be pulled out of the fitting by compressing the rubber gasket underneath the ring The base fitting surface is smooth and has no adequate gripping surface but the inside of the barb is socketed with a 9mm hex Allen key pattern The outer diameter of a fitting 20mm.