General description This set includes 15 high-speed steel (HSS) drill bits coated with titanium nitride for enhanced durability and performance. Designed for drilling metal and harder alloys, these bits offer increased drilling speeds of 40% to 60% compared to standard bits. The 135° split point ensures precise centering, reduces bit walk, and minimizes drilling pressure for cleaner and more accurate holes. The heavy-duty web construction provides maximum strength and durability for demanding applications. Technical specifications Number of pieces: 15 Sizes: 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 8mm, 9mm, 10mm Material: High-speed steel with titanium nitride coating Tip: 135° split point for precise drilling Compatibility and accessories Suitable for drilling metal, hard alloys, and other tough materials Compatible with standard drill chucks Installation Insert the desired drill bit into a compatible drill chuck Securely tighten the chuck to hold the