10pcs Micro Drill Bits Set, 0.2mm-1.1mm, 1/8″ Shank Spiral Flute CNC Router Bits PCB Mini Drill Bits for Circuit Board Stone Jewelry CNC Engraving

About this item Twist Micro Drill Bits — The cutting edge diameter of this PCB twist drill bit ranges from 0.2 to 1.1 millimeters (specifically 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1 millimeters), and the cutting edge length is from 3.5 to 10 millimeters. The shank diameter is 1/8 inch. This mini drill offers you a variety of types and a size range that you need, perfect for all your crafting and hobby projects. However, micro twist drill bits should not be used in impact drills. HIGH QUALITY — This set of PCB twist drill bits is composed of cemented carbide and high-speed steel. The cutting edge part is made of cemented carbide while the shank part is made of high-speed steel, which makes it have higher hardness and operate more stably. The cutting edge of the twist drill bit is coated with TIN titanium coating, featuring higher wear resistance and a lower coefficient of friction. It is not prone to chip accumulation and has a long service life. Wide Applications — This mini PCB drill bit has a wide range of applications. This drill bits are lightweight and compact, being an efficient tool that doesn’t require extra space. Whether the materials you are working with are resin, wood, plastic, rubber, PVC, walnuts, models, circuit boards, amber, olives or fiberglass, it can provide clean and precise holes every time. Use this professional and polished tool to enhance your crafting and hobby projects as it can handle various materials with ease. Convenient and Easy Storage — These gyros mini drill bits come in a handy clear vial storage case with a protective tight fit cover to keep drills secure and prevent them from being damaged or lost. Sturdy and Durable — This mini drill bit has a strong chip removal capacity, with less drilling chip pollution and less heat generated during drilling. Moreover, it comes in a rich variety of types, which can meet the different application requirements.