Step Drill Bit Set, Titanium Coated Drill Bits, 3 Pcs, Spiral Grooved for Faster Drilling, Step Bits for Stainless Steel, Metal, Wood, Plastic, Unibit Cone Drill Bits with 31 Step Sizes Total

About this item

Premium: Each Unibit is made of industrial high-speed steel with a titanium nitride coating for durability and strength to punch and drill clean holes in materials including plastic, aluminum, wood, copper, stainless steel, and other kinds of sheet metal. Unibits are made of industrial high-speed steel.
For Metal: Drilling holes in metal is quick, effective, and clean thanks to a split point tip that increases cutting speed while reducing angled roaming away from the center line of bore.
Spiral Design: For clearance and clean cutting, the two-flute spiral grooved design deburrs chip, dust, and debris. These step bits will produce exact holes with their 31 step sizes.
Fast-Change: Stepper bit swaps are simple, convenient, and quick thanks to the 1/4-inch hex shank, which is also compatible with impact-capable power tools.
Each bit set has three drill bits, totaling 31 sizes, to expand your drilling options: 12 step drill (3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8-inch), 13 step drill (1/8, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16, 15/32, 1/2-inch), and 6 step drill (3/16, 1/4, 5/16, 3/8, 7/16, 1/2-inch).