Hougen 11075-12 Fractional Kit Plastic tool case contains 11088 Arbor Assembly, Center Punch, extra Pilot, and (7) Cutters (5/16, 3/8, 7/16, 1/2, 9/16, 5/8 & 3/4")(12 pack) doc-6 All sizes have a "shoulder"

All sizes have a "shoulder" to prevent plunge-thru

Hougen Part #: 12132

Hougen Hole Cutter with 1/8" depth of cut features the patented quad-lead thread system for faster cutter changes and a shoulder to prevent plunge-thru

3) Eject the slug at the end of the cut

Hougen 11075-12 Fractional Kit Plastic tool case contains 11088 Arbor Assembly, Center Punch, extra Pilot, and (7) Cutters (5/16, 3/8, 7/16, 1/2, 9/16, 5/8 & 3/4")(12 pack) doc-6 All sizes have a "shoulder"Hougen RotaCut Large Diameter Fractional Cutter Kit including arbor, center punch, extra pilot, 5 16", 3 8", 7 16", 1 2", 9 16", 5 8" and 3 4" cutters and 5 16" 3 4" X 1 4" depth in plastic tool case is perfect for twist drills and hole saws. Cutter is precision ground and creates clean, burr free, round holes without deforming the surrounding material. Cutter makes hole making faster and easier when used on sheet metal, plate materials and plastics.