Professional Grade Stainless Steel Step Drill Bit Set for Precision Drilling

Professional Grade Stainless Steel Step Drill Bit Set for Precision Drilling. Premium Material Options: Available in HSS4241, HSS4341, M2, and M35 for superior durability. Customizable Shank Design: Offered in 3-Way Clamping, Hex Shank (1/4"), and Cylindrical styles. Versatile Flute Styles: Choose between Straight Flute or Spiral Flute for optimized chip flow. Multiple Surface Coatings: Select from Bright, Titanium Coated, TiAIN Coated, or Amber finishes. OEM and ODM Services: Full customization available with qualified design team support. High Precision Grinding: CBN ground and spiral flutes ensure quiet running and high performance. Wide Material Compatibility: Suitable for drilling steel, brass, wood, plastic, bronze, and aluminum. Comprehensive Quality Control: 100% inspection during production with random checks before packing.