HSS STEP DRILL BIT

HSS STEP DRILL FOR DRILLING CYLINDRICAL HOLESIN SOLID MATERILA UP TO A THICNKNESS OF 4MM
THE TAPERED CUTTING EDGES OF THE NEXT DRILL STEP CAN USED FOR SIMULTANEOUS DEBRURRING OR CHAMFRERING OF THE FINISHED BORE AT THE SAME TIME
DRILLING PERFECTLY ROUND HOLES IN STEEL,BRASS,COPPER,ALUMIUM,WOOD AND PLASTIC
THE MATERIAL IS HSS M35 AND M2,WE ALSO HAVE THE MATERIAL HSS 4341,HSS 4241,
SIZES:-3-12MM,4-12MM,4-20MM,4-22MM,4-30MM,4-32MM,4-39MM,5-35MM ETC.

ALL STEP DRILL BITS HAVE SPLIT POINTS AND COME IN TWO DIFERENT MATERIALS.
THE SPLIT POINT REDUCES "WALKING"WHICH IS THE TENDENCY OF A SPINNING BIT TO ROTATE AWAY FROM THE POINT AT WHICH YOU WANT TO DRILL
BECAUSE CBN(CUBICAL BORON NITRIDE) IS MUCH HARDER ABRASIVE THAN EVEN SILICON CARBIDE OR CORUNDUM,A BETTER AND SHARPER CUTTING EDGE