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5mm) Blade Hardness 57–59 Rockwell Maximum Cutting Capacity 28 gauge non-ferrous metal (soft copper rating on handle) Notes
00 mm) to 2 carat (8
Sold in a 5-foot (60-inch) pack
Left 1/2" tapered spindle
Cobalt Steel Twist Drill Complete Set of 19 on 3/32" Shanks-0.50mm to 2.20mm Burs Bulk Discount 5mm) Blade Hardness 57–59 RockwellThis Complete Set of 19 Cobalt Steel Twist Drills provides a full size range from 0. 50 mm to 2. 30 mm, each mounted on 3 32" shanks for fast, convenient tool changes. Cobalt steel delivers longer tool life than high speed steel, especially when drilling harder materials such as nickel based white golds and stainless steels. The result is consistent cutting performance across both tough alloys and softer precious metals. Features Cobalt steel
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