【Premium Material】: Made of high-speed steel, our center drill bits feature an extremely sharp blade, low consumption, and durability with impact resistance and wear resistance. Get precise center holes every time with this set of 7 center drills. 【Achieve Precision】: The 60 degree angle center drill is perfect for drilling accurate center holes, 60-degree countersink holes, or starter holes for larger drill bits in metalworking. With 60-degree angle options, use our center drill bits to creat 【Faster Drilling】: Our spiral flute design helps clear chips and debris away from the bit, reducing friction and heat for a faster, cooler drilling process. The precision ground surface is also corrosion-resistant, ensuring better results and a longe 【Wide Application】: The high-speed steel center bits set is compatible with lathe machines, drill presses, and most drills in hard materials such as steel, iron, alum, and brass ranging from 170HB up to 200HB. You can use this set for a variety of pr 【Package Includes】: The set includes 7 pieces of plain center drill bits in sizes 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 4mm, and 5mm, so you can choose the right size for your needs.