All sizes have a "shoulder" to prevent plunge-thru
plate materials and plastics
They are made of hardened M2 high-speed steel and are precision ground for excellent performance throughout the cut and long tool life
RotaMagic™ Super Concentrated Cutting Fluid is water soluble
The cordless puncher also includes the power retract system which if the punch ever resists exiting the material
Hougen 11114 15/32" RotaCut Hole Cutter 75002.5PR All sizes have a "shoulder"Item Details Hougen RotaCut Sheet Metal Cutters are 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. Cutter cuts 3 times faster than twist drills or hole saws and lasts 10 times longer making it ideal for electrical, piping, conduit work, sheet metal fabrication, spot weld removal, maintenance