The Starrett's high performance hole saws for drilling small diameter holes in many non-metallics. These Diamond hole saws are the ideal solution for the toughest cutting situations. Able to cut rapidly through porcelain, glass, ceramics, brick and stone, these hole saws are the ideal solution in the toughest of cutting situations. Small diameter hole saws are perfect for kitchen and bathroom installations and smooth surface finish, ideal when cutting glass and porcelain. Supported by a comprehensive range of drive arbors with carbide tipped pilot drills.