The Rotabroach™ Raptor Cutters have a unique and exclusive geometry. They are designed to ensure that they will last longer cut faster and give a better and more accurate finished hole than any other annular cutter. The cutters are manufactured from HSS with the addition of aluminium (M2AL) and heat-treated to a high temperature to ensure excellent hardness.This Rotabroach™ HSS Raptor Cutter has the following specification: Diameter: 50mmCutting Depth: 25mmPTDHLLRAP500