1/16 STRAIGHT DOUBLE FLUTE 1/4 SHKUse a two-flute bit where fine finish is paramount. Two flutes balance the bit, eliminating vibration that degrades the cut finish. Two cuts per revolution yield a smooth surface, but feed rate is slightly reduced. 45190 features a solid carbide cutting edge. Perfect for CNC work. Solid carbide (brazed to steel shank). Excellent for Cutting: Wood; MDF; and Plywood.