Faithfull Flat Bits produce a clean cut at a fast and efficient rate. They will bore all types of timber and will perform just as well with, or against the grain. These bits are also suitable for cutting MDF, plastics and plasterboard. The whole bit is forged from one piece of carbon steel and is heat-treated for extra strength and durability. All sizes feature a non-slip 1/4in hexagonal shank with a locking mechanism compatible with adaptors or chucks with a built-in quick-release feature. All sizes, except for the 6mm and 8mm flat bits, have a grooved tip and extended spurs to produce a clean cutting area, and faster boring speed.This Faithfull Flat Bit has the following specification: Diameter: 20mm.Overall Length: 151mm.Additional Information:• Diameter (mm): 20• Overall Length (mm): 151• Pack Qty.: 1