Material: Cemented CarbideColor: SilverFeatures:Shank Diameter: 3.175mmBlade Diameter: 0.8-3.175mm (0.8/1.0/1.2/1.4/1.6/1.8/2.0/2.2/2.4/3.17mm)Blade Length: 12mmTotal Length: 37mmFeatures:The use of ultra-fine cemented carbide material with good milling, cutting efficiency, ensure high working efficiency; They have sufficient bending strength and wear resistance; High hardness, high wear resistance, high strength; Sharp cutting edge, milling, hole and plate edge, surface clean, neat, no interference. Application: PCB,SMT, CNC, mold, pastic fiber, carbon fiber, super hard wood, printed circuit board, other parts precision processing. Quantity: 10pcs/setNote: Please allow 1-2mm errors due to manual measurementDue to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included:10pcs PCB Drill Bit Engraving Milling Machine