High performance hole saws for drilling small diameter holes in non-metallics. The ideal solution for the toughest cutting situations. Featuring a diamond coated cutting edge permanently bonded to a tough steel body, the Starrett Diamond Grit hole saw provides the necessary clearance for cutting at high speeds. Rapid cutting solution for non-metallics. Small diameter hole saws are perfect for kitchen and bathroom installations. Smooth surface finish, ideal when cutting glass and ceramics. Supported by a comprehensive range of arbors with carbide tipped pilot drills. The ultimate hole saw for hard-to-cut materialsTeeth Type: Synthetic diamond gritCountry of Origin: CN Specifications Diameter metric: 40mm Diameter imperial: 1,9/16" Cutting Depth metric: 38mm Cutting Depth imperial: 1,1/2" Arbor Type: XA2 or XA10 Thread Size: 5/8 - 18"