60-Degree V-Groove Bit, 1/2-Inch Diameter, 1/2-Inch Shank 7/16-Inch Cutting Length, 2-3/8-Inch Overall Length. Make delicate grooves and incisions with laser precision. Raise bit and produce fine point incision or work the whole diameter to render highlighted letters. Non-Stick Orange Shield Coating, 3 cutting edges. 3 SinterHip Hi-Density Industrial Chrome Carbide cutting edges for long-lasting performance.