MA Ford 6.4mm EdgeHog, Cyl Flat End Miniature Carbide Bur SA-51M-D, Double-cut, Diameter: 6.4 mm, Shank Diameter: 3mm, Overall Length: 51mm, Flute Length: 12.7mm, Finish: Uncoated, Material Base: Carbide, MPN: 70010027M, Double Cut - The Flutes are ground in both the left and right hand directions, offering better operator control and rapid stock removal in harder materials.