Bicycle cycling front rear wheel disc brake bracket bike frame adapter mounting holder material is stainless steel.
Modified ring diameter: about 21mm / 0.87in, 32mm / 1.26in.
It is adjustable,and the bracket can be adapted from normal bicycle application into disc brake bicycle.
Thickness: about 4mm / 0.16in. Spacing between the 2 holes: about 51mm / 2.01in.
Use: for original bicycles without disc brake installation position, for disc brake modification.