EK-Quantum Torque 6-Pack STC 10/13 is a fitting multipack containing six EK-Quantum Torque STC fittings. These are EK's premium 10/13mm (ID/OD) soft-tube compression fittings, designed for use with various flexible soft tubing types such as PVC, EPDM, Norprene, silicone, or any other type of compatible flexible tube. With a non-intrusive yet striking look and NO added branding, these fittings can be complemented by interchangeable aesthetic color rings, making them an ideal choice for anyone and a perfect match with EK-Quantum series products. The locking ring compresses the tubing wall underneath, preventing the flexible tube from being pulled off the barb of the fitting. The grooves on the outside allow for easier hand tightening. The compression ring features cutouts in the EK Quantum signature shape, allowing for the colored aesthetic ring to be displayed. The colored rings, available in many colors, are screwed onto the fitting before the compression locking ring. The aesthetic rings are sold separately. The fitting barb and the compression rings are first nickel-plated, followed by a second plating with genuine gold. Both are made of CNC machined brass, and the seal is made of quality rubber O-rings. These fittings are guaranteed to be compatible with all other EK Water Blocks liquid cooling products. Technical data: - Material: Brass - Finish: Gold - Thread: G1/4" BSPP; 4.5mm male thread length - Supported tube: 10/13mm (ID/OD) - The outer diameter of a fitting: 20mm - Installed height: 19mm - Compatible soft tubing: PVC, EPDM, Norprene, silicone Model: 3831109913109