Hexagonal Shank Step Drill Spiral High HSS Steel Drill Titanium Coated

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Set of 3: 4-32mm 15 steps (length 77mm), 4-20mm 9 steps (length 50mm), 4-12mm 9 steps (length 46mm) Step drill bits * 3 + storage bag

High-Speed Steel: Made of ultra-hard high-speed steel (HSS 4241) with a titanium coating on the surface, making it stronger and sharper.

Wide Range of Applications: Drill holes in common household items, work tools, galvanized iron, aluminum, wood, vinyl, plastic, etc.

Applicable Scenarios: Home improvements, vehicle repairs. Step drill bits expand holes sequentially from small to large, allowing you to drill various sizes and enlarge or repair holes.

Compatible Machines: Electric drills, cordless drills, impact drivers, etc. (For cordless drills, please use models with 12V or higher.)

Hex Shank Step Drill Bit, Spiral High-Speed HSS Steel Drill Bit, Titanium Coated Reamer Drill Bit, Set of 3 [4-32mm/4-20mm/4-12mm] For Sheet Metal/Aluminum, Woodworking, DIY Tools, Household Use, With Storage Bag