Half Ground processing technology for bright, smooth surface and durability.
Long life, wear resistant & precise dimensions.
Marterial: HSS 4241 High speed steel
For use in Iron, Aluminum, Carbon steel, mild steel, alloy metal, Plastic.
Manufactured from 4241 high speed steel, with molybdenum added to creates a hardened alloy, measuring Rockwell hardness up to 61, for much faster cutting and extra longer life span.
No center punch is needed—the 135° Quick-Cut points are self-centering and penetrate quickly with less pressure. Will not “walk” or “wander”.
Extremely heat resistant; must be used and operated at 1500 RPM or greater for maximum efficiency. Straight round shank allows for firmly holding and accurate centering, fit for standard drill chucks and regular round collet chucks.
The set includes 10pcs of 4241 high speed steel twist drill bits: 5/16″ inch.
Particularly successful in cutting through hard metals such as alloy steel and cast iron, although they can be used for softer materials, too.
10x Drill bits
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from United States (US)