Mata bor mini micro bor PCB print circuit board cnc drill bits micro tungsten carbide 10 pcs / Mata bor micro kecil set 10 pcs 0.1 - 1.0mm Ikura Tools Mata Bor Micro PCB Tungsten Set 10Pcs Size 0.1mm 0.2mm 0.3mm 0.4mm 0.5mm 0.6mm 0.7mm 0.8mm 0.9mm 1.0mm