Bigger, tougher Flush Trim Bits for a smoother finish The heavy-duty trimming bits are larger diameter and use thicker carbide (3.5 – 4.0mm) tips to remove more material quickly. With a negative shear on the blade they provide a smoother finish on timber edges than standard trimming bits. Specifications Shank Size – 1/4in Cutter Diameter – 19.0mm / 3/4in Cutting Height – 25.4mm / 1in Overall Length 69.9mm