Microbox number drill set (20) 61-80 (.99mm - .34mm)
Drill Set-wire gauge – sizes in U.S. inches Including sliding top index storage dispenser. Twenty high speed steel drill bits with handy slide-top box that releases only chosen drill bit.
Drill numbers: 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 78,79, 80.
Used for drilling all types of wood, precious metals, non ferrous metals, mild steel, bone, sea shells and plastics.
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