Review on High-Heat-Resistant 14Mm Cobalt Steel Drill Bit With Straight Shank For Cutting Stainless Steel And Cast Iron - 1Pc, Grade M35 HSS-CO With 5% Cobalt Content by James Ssims

Name: High-Heat-Resistant 14Mm Cobalt Steel Drill Bit With Straight Shank For Cutting Stainless Steel And Cast Iron - 1Pc, Grade M35 HSS-CO With 5% Cobalt Content
Item: High-Heat-Resistant 14Mm Cobalt Steel Drill Bit With Straight Shank For Cutting Stainless Steel And Cast Iron - 1Pc, Grade M35 HSS-CO With 5% Cobalt Content
Rating: 1

June 19, 2023

arrived dull, became dull after a few seconds again

I bought the drill to drill out a bolt stuck in a cylinder head.Drill arrived literally dull, not sharp as everybody would expect. Then I sharpened the drill and used it.Drilled less than 1/16 of an inch before it got dull again. No quality at all.

Pros

Cobalt Steel - Manufactured From M35 5% Cobalt Steel, With Molybdenum And Cobalt Added To Creates A Hardened Alloy, Measuring Rockwell Hardness Up To 65, For Much Faster Cutting And Extra Longer Life Span, With Up To 10 Times When Compared with an Average HSS Drill Bit.

Cons

The bit may be too loud or obnoxious during use, disrupting others in the vicinity or leading to complaints from neighbors

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