ReamerChina Slot Drill 0.55*6.70mm/Tungsten Carbide/Cutting Tool/PCB Drilling/Milling Cutter/Core Drill/ Hand Tool, Find details about China PCB Slot Drill Bit, PCB Drilling from Slot Drill 0.55*6.70mm/Tungsten Carbide/Cutting Tool/PCB Drilling/Milling Cutter/Core Drill/ Hand Tool