0.9mm Carbide Steel PCB Drill CNC Micro Engraving Drill Bit BR2046 Description: CNC End Mills Carbide Rotary Cutter For Machining.These very hard, solid tungsten carbide, micro twist drill bits are excellent for producing smooth, precision holes and drilling through all hard metals. Ensure a steady hand when using these drills, ideally used at high speed in a pillar drill. Specification: Product Name : PCB drill bit (End Mill) Material : blade carbide (tungsten steel) Cutting Edge Diameter : 0.9mm Cutting Edge Length : 9mm Shank Diameter : 3mm Total Length : 38mm Features: Carbide rods and tungsten steel rods, with high hardness, high wear resistance, high strength, resistance to bending, anti-impairment and long tool life. Range of processing: PCB, SMT, the CNC, mold, plastic, copper, stainless steel and other precision metal parts processing. Drill bit chip evacuation space large, chip evacuation resistance small, chip removal smooth. In favor of efficient cutting, avoid offset drilling.