Trend Two Flute Straight Cutters produce a cleaner finish than the single flute cutters. Suitable for grooving, rebating, morticing, drilling and shallow lateral routing cuts such as recessing hinges. Corners will require a final trimming square with a hand chisel or a corner chisel. Suitable for abrasive materials such as chipboard, MDF, plywood, hardwoods and hard plastics.This Trend 3/83 x 1/2 TCT Two Flute Cutter has the following specification: D: 12.7mm (1/2in)C: 50mmOL: 108mmShank Diameter: 1/2in For use with professional routers that have a 80mm deep plunge. One piece multi-slit collet to ensure safe cutter retraction into base. Designed for hollow honeycomb board worktops.