MA Ford 1/4 EdgeHog, Spherical Miniature Carbide Bur SD-51, Standard, Diameter: 1/4, Shank Diameter: 1/8, Overall Length: 1-23/32, Flute Length: 7/32, Finish: Uncoated, Material Base: Carbide, MPN: 70030020, Single (Standard) Cut - A general-purpose right hand flute style is recommended when rapid stock removal and good workpiece finish are the parameters.