1-1/4 Inch Dia Shank
Broach cutting cutters means you can produce large diameter holes efficiently and quickly with less energy, faster penetration and less thrust. Rather than drilling out the metal with a solid drill, the cutters remove only the periphery of the hole, ejecting a slug at the end of the cut. Tests show that a solid drill will take 3 minutes, 45 seconds to drill a 1-1/4 " hole in 3/4" plate. This cutter can do the same job in 35 seconds. High Speed Steel. Made in England- Sheffield Steel.