Hole Saws Product Description Boya HSS sawing and cutting tools range provides craftsmen with the tools necessary for creating a quality finish. The HSS cutting tools offer includes (masonry, metal, timber and tile cutting tools), allowing the flexibility to work with almost any material. The M2 HSS is a high speed steel cutter for general hole making applications which results in Edge Sharpness that lasts longer, drilling more holes than standard HSS cutters. Special geometry improves performance of centering as well as removal of chips. Salient Features & Advantages 1. website:http://www.boyatools.com/hole-saws/