M3 or M42 Bi-metal Hole Saw, Journeyman's Kit, Sharp and long-lasting tools Hole saw set ( Bi-metal hole saw Journeyman's kit )M3 or M42 Bi-metal Hole Saw KitIncludes: 19mm, 22mm, 29mm, 35mm, 38mm, 44mm, 51mm, 57mm, 64mm hole saws3/8" Hex, 7/16" Hex, Pilot drill and Mandrel adapterAluminum display case Sizes in inch are also available.