High Speed Steel Twist Drill Assortment Jewelers 20 Piece Set Size 61 to 80
Made of high-speed steel, this handy drill index offers sizes 6180 (.0390" .0135" or .99 - .34mm) for fine jobs. All drills are handily marked by size, finely ground and heat-treated to a Rockwell hardness of 63. Your small drill will stay conveniently organized in this handy metal index.
- Drill index offers 20 drills in metal storage case with sizes clearly labeled in inches and drill gauge
- Sizes included (#61-80): .0390" .0135" inches or .990 - .343mm
- Made of high speed steel