Hub Shell: Low Flange 6061 heat treated Aluminium

That process is backed by an umatched and legendary 41-Thermal warranty against bending and breaking

finished with a small hidden compartment accessible through a coin slot cap

Features a 2 finger design lever for comfort and a hinged clamp for easy installation and removal

Boasting a 1020 Hi-ten steel construction throughout the frame

Box One Race Hub Lock Ring Colour:Blue Hub Shell: Low Flange 6061Extruded and CNC machined from 6061 T6 aluminium, Box One Hub Lock Rings are lightweight and beautiful. Replace that old steel lock ring you have now and save some weight while adding style and color to your whip to fit Shimano compatible cassette bodies. Keep in mind, aluminium is softer than steel, so use care when installing one of these lock rings.