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10Pcs 1.0mm Mini Solid Carbide CNC Drill Bits For 3D Printer Specification: Quantity: 10pcs Material: Tungsten Carbide Cutting Diameter: 0.1mm-1.0mm Cutting Length: 12mm Total Length: Approx.38mm Shank Diameter: Approx.3.175mm(1/8') Range of processing: PCB SMT CNC board, mold, plastic, copper, stainless steel and other precision metal parts processing. Use high quality materials and fine grinding process makes bit more sharp cutting edge, reduce cutting force and broken drill, improve the quality of hole wall. Note: Each Bit has a Colored Depth Setting Ring,but the color will be shipped randomly. Package included: 10 x Drill Bits