SRAM XX 10sp Rear Derailleur
Exact Actuation ratio works with all SRAM mountain/road 10-speed shifters Di.R.T (Direct Route Technology) for light-effort shifting performance Forged magnesium inner link with a forged aluminum outer link and B-knuckle, plus a Grilon composite P-knuckle Titanium and aluminum Torx-T25 hardware and a titanium parallelogram return spring Carbon fiber outer and inner cage with sealed, ceramic bearing pulleys