Vortex Drill Bits And Bit Indexes. The Vortex drill bits from Noresman/Viking drill are a great bit for hard materials like hard steel, cast iron as well as copper, sheet metal, acrylic brass and more. The special point is also very useful for enlarging smaller holes with ease. It also reduces heat and therefore extending the life of the sharp edge. Sizes 3/16" and up have tri flat shank to prevent slippage.
MIX AND MATCH SINGLE BITS FOR QUANTITY DISCOUNTS UP TO 20%