115PC M35 Jobber High-Speed Steel Cobalt Drill Bit Set Twist Drill Bit for Steel Cast Iron Copper Aluminium Alloy Drilling

115PC M35 Jobber High-Speed Steel Cobalt Drill Bit Set Twist Drill Bit for Steel Cast Iron Copper Aluminium Alloy Drilling. M35 Cobalt HSS Material: Superior hardness for drilling stainless steel, cast iron, titanium, and high-temperature alloys. 135-Degree Split Point: Self-centering design prevents walking and ensures precise countersinking with clean holes. Comprehensive 115-Piece Set: Includes 29 fractional, 29 letter, and 60 numbered sizes ranging from 1/16 to 1/2 inch. Versatile Drilling Applications: Suitable for wood, metal, masonry, and hard plastics with staggered cutting teeth. Custom Surface & Packing: Offers Amber and Black Oxide finishes with customizable metal box packaging options. Organized Storage Case: Includes a dedicated holder with size index for easy storage and quick bit selection. OEM and ODM Services: Full customization available from samples, designs, or minor adjustments. Fast Lead Time: One-month delivery time available for both peak and off-peak seasons.