Starrett Tungsten Carbide Tipped Fast Cut Multi Purpose Holesaws are the perfect tool for users from construction and installation engineers to the diy enthusiast. Offering very fast cutting times, and outstanding life,these MPH saws will power through wood, MDF, plastics and ceramic wall tiles. Advantages: Carbide tipped teeth for outstanding cutting performance and product durability. Smooth cut, with minimal heat build up. Cutting depth 54 mm (2 1/8in), allowing use for cutting through strapping and joists. Suitable for use in mains and battery powered tools. Multiple uses - cutting wood, mdf, plastics, ceramic wall tiles and building bricks.The increased cutting depth allows for cutting through strapping and joists. Size: 20mm