Foredom Cobalt Steel Step Drills, 17 head sizes from .5mm - 2.3mm or 10-pc Assortment
Handling 7-10 business days
Brand new in its original packaging
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A-8005 - .5 mm, A-8006 - .6 mm, A-8007 - .7 mm, A-8008 - .8 mm, A-8009 - .9 mm, A-8010 - 1. 0 mm, A-8011 - 1. 1 mm, A-8012 - 1.2 mm, A-8014 - 1.4 mm, A-8015 - 1.5 mm, A-8016 - 1.6 mm, A-8017 - 1.7 mm, A-8018 - 1.8 mm, A-8020 - 2.0 mm, A-8021 - 2.1 mm, A-8022 - 2.2 mm, A-8023 - 2.3 mm or AK8000: includes: A-8005, A-8007, A-8009, A-8011, A-8012, A-8014, A-8016, A-8018, A-8020, and A-8022.
Drills are solid cobalt steel and outlast high speed steel (HSS) bits 15 to 1.
Note: For all International Orders, the buyer will be solely responsible for the customs clearance, duty, and taxes imposed on the package.
Drilling speeds should be between 500 and 10,000 rpm. All drilling should be done with a lubricant. The harder the material (metal) to be drilled and the larger the hole size, the slower the drill speed.
Material 1mm (1/16) Drill 2.35mm (3/32) Drill
Aluminum 7,000-8,000 5,000-6,000
Mild Steel 3,000-3500 2,000-3,000
Stainless Steel 1,000-2,000 500-1,000
Brass, Silver, Copper 5,500-6,500 4,000-5,000
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