EK-AF (Adapter Fitting) rotary angled (90°) extender male/female with G1/4 threads, italled height 28 mm. EAN : 3831109845264 (nickel veion).https:www.ekwb.comhop/ek-af-angled-90-g1-4-nickelDimeio are from EKWB website (diameter, height, threads' lengts) or my own measurements where needed. The rotating mecanism is a pure fiction albeit based on an educated guess.