M8 x 15mmThis specialty hardware is made from 7075T73 grade Aluminum. Tensile Strength= 0-560Mpa, Stronger Than Mild Steel. Weight is 60% less that Steel and 40% Lighter than Titanium. Anodized to 8-12 Microns thick for rich color and Anti-corrosion Looks great on Motorcycle Fairings and Automotive Accessories