- Set of 10 SZCXDKJ 3 mm diameter drill bits, made of M35 high-speed steel with 5% cobalt - High drilling precision and great cutting capacity, ideal for stainless steel, hard metal, cast iron, copper, and aluminum - 135° self-centering split point design for greater stability and precise drilling - Fully ground spiral body that quickly removes chips and reduces friction and heat - Compatible with manual, electric, and bench drills, also suitable for sheet metal, wood, and plastic - Total length of 60 mm and flute length of 33 mm, perfect for demanding jobs and frequent use - Premium material ensures durability, wear resistance, and professional performance in DIY and workshops