EK-Quantum Torque Color Ring 10-Pack HDC 16 - Satin Gold are the interchangeable aesthetic accent rings for EK's new minimalistic 16mm hard-tube compression fittings designed for use with 16mm OD solid tubing such as Acrylic and PETG. They are made of anodized aluminum.

EK-Quantum Torque Compression Ring 6-Pack STC 13 - Satin Gold is a premium locking ring made for the EK-Quantum Torque STC 10/13 series fittings. It is not a stand-alone product, requiring an existing Torque fitting's barb.

EK-Quantum Torque Compression Ring 6-Pack HDC 12 - Satin Gold is a premium locking ring made for the EK-Quantum Torque HDC 12 series fittings. It is not a stand-alone product, requiring an existing Torque fitting's barb.

EK-Quantum Torque Compression Ring 6-Pack HDC 16 - Satin Gold is a premium locking ring made for the EK-Quantum Torque HDC 16 series fittings. It is not a stand-alone product, requiring an existing Torque fitting's barb.

EK-Quantum Torque Compression Ring 6-Pack STC 16 - Satin Gold is a premium locking ring made for the EK-Quantum Torque STC 10/16 and 12/16 series fittings. It is not a stand-alone product, requiring an existing Torque fitting's barb.