High-Speed Steel Core Step Drill Bit Set for Precision Holes

High-Speed Steel Core Step Drill Bit Set for Precision Holes. High-Speed Steel Material: Available in HSS4241, HSS4341, M2, and M35 grades for superior durability. Titanium Coated Surface: Features titanium coating with options for bright finish or amber color. Spiral Flute Design: Optimized chip flow ensures quiet running and prevents chip breakage. 3-Way Clamping Shank: Compatible with 1/4 inch hex shank and cylindrical shank options. Multi-Material Usage: Suitable for drilling steel, brass, wood, plastic, bronze, and aluminum. OEM Customization: Custom designs accepted with qualified designer team support. Quality Control Process: Includes sample approval, 100% production inspection, and random checks. Multiple Packaging Options: Available in plastic boxes, double blister cards, or metal boxes.