EK-AF Extender Rotary M-M G1/4 a simple male-threaded revolvable extender interconnect for connecting two water cooling components with female G1/4 threads together and allows you to spin them independently from each other. Made from nickel-plated CNC machined brass. Sealed with quality orings. These Extenders are to be tightened by hand. Technical data: Threading: 2 x G 1/4″ (Male – Male), Thread length: 4.0mm, Diameter: 18.8mm, Height: 16.0mm ROHS 2.0 compliant!