The 135 degree split point reduces thrust and eliminates walking at the drill point. This makes them short drills in the larger sizes and thus well suited to use in portable electric drills equipped with 1/2 chucks. The maximum overall length is 6 and the flute length is 3.
Rather than drilling out the metal with a solid drill, Drillco cutters remove only the periphery of the hole, ejecting a slug at the end of the cut..Broach cutting using Drillco cutters means you can produce large diameter holes efficiently and quickly with less energy, faster penetration and less thrust.
Broach cutting using Drillco 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, Drillco cutters remove only the periphery of the hole, ejecting a slug at the end of the cut.