High performance hole saw kits for drilling non-metallics. These diamond edge hole saws are produce d with a uniform coating of synthetic diamond grit bonded to a durable steel platform. This provide s exceptional performance at high speeds and effective cutting action on non-metallics and other dif ficult to cut materials. Diamond edge saws produce clean, accurate cuts and offer extended life wel l beyond that of conventional tools. Kit includes nine hole saws: 3/4'' (19mm), 7/8'' (22mm), 1-1/8 ' (29mm), 1-3/8'' (35mm), 1-1/2'' (38mm), 1-3/4'' (44mm), 2'' (51mm), 2-1/4'' (57mm), 2-1/2'' (64mm ); two arbors: XA1, XA2; one carbide tipped pilot bit: XA014C; one 12" extension: A5; and case.