EK-Quantum Torque Compression Ring 6-Pack HDC 12 - Red 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 Extender Static MM 28 is a premium male-threaded extender interconnect with male threads on both ends. It is used for connecting two water cooling components which both have female G1/4 threads.

This is not a revolvable extender.

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 - Blue 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 Extender Static MM 7 is a premium male-threaded extender interconnect with male threads on both ends. It is used for connecting two water cooling components which both have female G1/4 threads.

This is not a revolvable extender.

EK-Quantum Torque Static FF 45° is a 45° adapter fitting with two female G1/4" threads.