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Specification: Brand new Material: titanium plating Color: silver, as picture shows Shank Diameter: approx. 3.175mm Cutting Edge 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) Cutting Edge Length: approx. 12mm Overall Length: approx. 37mm Quantity: 10pcs per set Use of ultra-fine grain carbide material with good milling, cutting performance, ensure high work efficiency; 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 glitches. Application: PCB,SMT, CNC, Mould, pastic fiber, carbon fiber, super hard wood, printed circuit board, other precision parts processing. Package included: 10pcs x PCB drill bits (packed with box)