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 HDC 12 - Nickel 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 14 - Blue is a premium locking ring made for the EK-Quantum Torque HDC 14 series fittings. It is not a stand-alone product, requiring an existing Torque fitting's barb.

EK-Quantum Torque Compression Ring 6-Pack HDC 14 - Red is a premium locking ring made for the EK-Quantum Torque HDC 14 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 - Red 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 HDC 16 - Red 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 HDC 16 - Red 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 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 Micro HDC 12 is a premium 12mm fitting made for solid tubing, such as acrylic, PETG, and brass. A much smaller footprint will allow tube placement in places where a regular fitting would be too large or inconvenient. It was named Micro due to an installed height of only 11.5mm, which is 23% shorter than standard Torque HDC 12 fittings. The outer diameter of the fitting is also significantly smaller than its bigger brother, with only 16mm across the fitting.