ProX Valve shims are made of premium materials. 10.00mm diameter - Includes three valve shims in each size between 1.85 and 3.20mm in .05mm increments. 84 shims in total. (example: 1.85mm 1.90mm, 1.95mm, 2.00mm, 2.05mm etc). P/N: 29.VSA1000