Dimension : M8 x 18mm; Flange Diameter : 18mm; Hex Width : 13mm; Head Height : 7mm;
Bicycle Crank Arm Bolts is made of steel, which feature is strength and offers good corrosion resistance in bad environment like high temperature, cold weather, and high humidity areas.
Using high-precision cutting technology, the threads are very precise, clean and sharp, and the deep and clear threads can ensuring a firm fixation and not easy to deform and slide during use.
Our 8mm Hex fixing screws is easy installation, a good replacement for crankset repair, suitable for any square hole crankset & bottom bracket.