1/2"TwoFluteMortise CompressionBit Mortise Compression Spiral Bits feature a shorter up shear length than other compression spiral bits, making them ideal for grooves and mortises, or for through-cuts in thin double sided material (5/8" thick or less). Rout plywood, melamine and other double-sided materials, as well as hardwood and softwood. For use in CNC, hand-held or table-mounted routers. Perfect grooves and mortises in delicate materials Routs melamine, veneer plywood, hardwood and softwood Black I.C.E. coating for cool cutting edge and superior chip evacuation Freud Premier Solid Carbide Black I.C.E. + Freud TiCo Hi-Density Carbide = 2X increased life and performance vs. standard uncoated bits Ideal For: through cuts in thin double-sided materials (77-510, 1/2" Shank, 1/2" Cut Dia, 1-3/8" Cut Length, 3-1/2" OAL DF Up-Cut Spiral Mortise Compression Bit)