10pcs 0.1-1mm PCB mini drill Bit tungsten steel carbide for print circuitY Ew

ITEM NAME:10pcs 0.1-1mm PCB mini drill Bit tungsten steel carbide for print circuitY Ew.Circuit board, carbon fiber, composite board, and so on. 1 x 0.1mm drill bits. 1 x 0.2mm drill bits. 1 x 0.3mm drill bits. 1 x 0.4mm drill bits. 1 x 0.5mm drill bits. 1 x 0.6mm drill bits. 1 x 0.7mm drill bits.