HSS Step Drill Bit Set Titanium Coated Straight Groove Hex Shank Hole Cutter 3-12mm 4-12mm 4-20mm

Specification:

• Type: HSS step drill bit set with titanium coating
• Shank: Hex shank for secure chuck and quick-change
• Sizes: Includes 3–12mm, 4–12mm, and 4–20mm step profiles
• Material: High-speed steel core with titanium nitride coating
• Cutting: Straight groove design for efficient chip removal
• Durability: Enhanced wear resistance from TiN coating
• Use Case: Sheet metal, plastic, and thin materials drilling
• Compatibility: Works with drill drivers and drill presses
• Finish: Precision ground steps for clean hole edges
• Packaging: Protective case for organized storage

Description:
This HSS step drill bit set features titanium-coated, straight-groove cutters with hex shanks for reliable grip and quick changes. Covering 3–12mm, 4–12mm, and 4–20mm profiles, the bits are ideal for drilling clean holes in sheet metal, plastic, and thin materials. The TiN coating improves wear resistance and cutting life, while the straight grooves aid chip evacuation. Each set includes ASCII-friendly labeling for straightforward inventory tracking and workshop assembly use.