Add some colour to your Torque fittings with these coloured rings. Offering a subtle hint of colour without the RGB lighting to give you that small unique look to your system. EK-Torque STC 10/13 Color Rings Pack - Green (10pcs) are the interchangeable aesthetic rings for EK\'s new minimalistic 10/13mm soft-tube compression fittings designed for use with 10/13mm ID/OD soft tubing. These aesthetic rings are made of anodized aluminum. The colored rings are available in many colors and are screwed onto the fitting before the compression locking ring. These accent rings are guaranteed to be compatible only with EK-Torque STC 10/13 fittings. Note: Fittings for illustration purpose only and are not included