One 1/4-inch to 3/4-inch nine-step bit, titanium coated. Package comes with one 3/16-inch to 1/2-inch six-step bit, titanium coated. COMOWARE Step Drill Bit Set & Automatic Center Punch- Unibit, Titanium Coated, Double Cutting Blades, High Speed Steel, Short Length Drill Bits Set of 5 pcs, Total 50 Sizes with Aluminum Case 4. Two-flute design for faster, smoother cutting. This compact set replaces 28 individual drill bits. TRI-FLATTED SHANK: fits into power tools chuck securely and eliminates slip. TWO-FLUTE DESIGN: clears chips faster and allows particles to escape easily. IRWIN Unibit Step Drill Bit High Speed Steel Set, 4 Piece Perfect Hole-Drilling in Metal. Get it now This two-piece step drill bit set allows you to drill the proper sized hole in plastic or wood using a single bit.135° SPLIT POINT TIP: increases cutting speed with self-centering and prevents walking. These step bits will make a clean hole in thin.
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