ITEM NAME:10Pcs DIY 1.1mm-2.0 mm PCB Print Circuit Board Carbide Micro Drill Bits Tool JR.This micro twist drill bits set is made of Tungsten Steel (Drill Bit tip) and high speed steel (grip), which is with high strength and high hardness performance. Precise and professional made, the specification of drill bits is range from 1.1mm to 2.0mm.
