Application: General purpose arbor shims used on assembly type tools that require cutter adjustment. Particularly useful after tool re-sharpening. Diameters: ‘d’ Inside x ‘D’ Outside 3/4″ x 1-1/4″ 8 Pc Set Includes: ‘B’ Shim Thickness 0.1mm (.0040)    1 pc. 0.2mm (.0078)    2 pc. 0.5mm (.0197)    1 pc. 1.0mm (.0393)    4 pc.