FOR USE WITH HOUGEN PORTABLE MAGNETIC DRILLS AND MANY COMPETITIVE MODELS ON MATERIALS UP TO 275 BHN (28.5 HRC). THEY ARE MADE OF HARDENED M2 HIGH SPEED STEEL AND ARE PRECISION GROUND FOR EXCELLENT PERFORMANCE THROUGHOUT THE AND LONG TOOL LIFE. THEY REQUIRE LESS HORSEPOWER AND THRUST TO AND LAST MUCH LONGER THAN TRADITIONAL HOLEMAKING METHODS. BENEFITS UL STYLE""MARGIN-TOP0PX; PADDING-TOP 5PX; PADDING-BOTTOM 5PX;"" MAKES LARGE DIAMETER HOLES EFFICIENTLY WITHOUT THE MESS OF CHIPS A HOLE PRODUCES A SLUG OF MATERIAL THAT COULD BE USED FOR ANOTHER JOB FEATURES UL STYLE""MARGIN-TOP0PX; PADDING-TOP 5PX; PADDING-BOTTOM 5PX;"" FULLY FLUTED PROVIDES BETTER CHIP EVACUATION 3/4"" DOUBLE FLATTED SHANK IS VERY RIGID & OFFERS UP TO 2 TIMES THE TOOL LIFE AS COMPARED TO QUICK CHANGE TOOL MOUNTING ON COMPETITIVE PRODUCTS ONLY A THIN AREA OF MATERIAL TOUCHES THE OUTSIDE OF THE HOLE WHICH PROVIDES FOR LESS FRICTION AND A BETTER HOLE FINISH PATENTED HOUGEN-EDGE GEOMETRY PROVIDES FASTER SMOOTHER CUTS WITH LESS CHATTER TAPERED INNER DIAMETER PROVIDES A RELIEF AREA BETWEEN THE SLUG & CUTTER TO REDUCE HORSEPOWER & IMPROVE SLUG EJECTION UP TO 10 CUTTING EDGES DISTRIBUTE THE CUTTING LOAD EVENLY TO MAXIMIZE FEED RATES THE SLUG OFFERS A HIGHER SCRAP VALUE THAN LOOSE CHIPS