10pcs High Hardness Alloy Tungsten Steel Power Tools Micro 0.1mm-1.0mm Mini Carbide Drill Bits PCB Drill Bit 0.3MM

USE: Precision drilling of amber beeswax circuit boards bakelite CNC engraving glass jewelry hardware and plastics etc Model: 0.1-1.0mm Quantity: 10pcs/Set Material: Alloy Tungsten Steel Size: As Pictures Shown Shank Diameter 3.175mm approx Color: Silver Specifications: 1. Tungsten steel bit easy to handle precision grinding technology high wear resistance high hardness durable. 2. Good chip removal double edge milling cutter edge sharp chip removal fast high durability not easy to break the cutter. 3. Spiral groove sharp cutting edge and large spiral groove design can prevent the formation of chip accretion. 4. Humanized positioning ring sleeve box design can reduce the debugging time of the machine. 5. The anti-seismic design of knife edge can slow down the vibration of machining process and improve the surface quality. Package Included: 10 * Drill Bits