Diamond Edge Hole Saws-Saw Diameter: 3 3/8". Permanently bonded to a tough steel body provides the necessary clearance for cutting at high speeds They will cut rapidly through reinforced plastics, germanium, asbestos/substitutes. and other abrasives that you many not be able to cut with carbide. Saws will produce clean holes and have a long cutting life. The cutting depth is 1 5/8" (41 mm).