Replacement rear thru axle for CLEAN X3 hub, size 12x144mm. See description below for exact dimensions. The thru axle is designed for both CLEAN X3 rear rim and disc hubs. The axle is CNC machined from extremely strong 7075-T6 aluminum alloy. To tighten the axle an 8mm inbus wrench is required and the recommended maximum tightening torque is 10-12Nm.