10Pcs 1.0mm Mini Solid Carbide CNC Drill Bits For 3D PrinterSpecification:Quantity: 10pcsMaterial: Tungsten CarbideCutting Diameter: 0.1mm-1.0mmCutting Length: 12mmTotal Length: Approx.38mmShank 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