Rear Bolt Thru-Axle for Carbon Disc Frames Replacement bolt thru-axle for Ribble carbon framesets equipped with disc brakes, circa 2019 onwards. A super-tough thru-axle that features a leverless design for a clean look & added security. Tightens with a 6mm Allen key & is compatible with the following models;CGR SLGravel SLEndurance SL Disc Endurance SL R Disc CX SLSpecifications 172mm M12 x P1.5 Max. Torque: 10 Nm Fitting: 6mm Allen key