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Review on Professional Grade 10Mm Cobalt Steel Twist Drill Bit - Heat Resistant For Stainless Steel And Cast Iron - Straight Shank Design - M35 Grade HSS-CO With 5% Cobalt - 1 Piece by Ben Jacobson

Name: Professional Grade 10Mm Cobalt Steel Twist Drill Bit - Heat Resistant For Stainless Steel And Cast Iron - Straight Shank Design - M35 Grade HSS-CO With 5% Cobalt - 1 Piece
Item: Professional Grade 10Mm Cobalt Steel Twist Drill Bit - Heat Resistant For Stainless Steel And Cast Iron - Straight Shank Design - M35 Grade HSS-CO With 5% Cobalt - 1 Piece
Rating: 1

July 08, 2023

Inaccurate good for me

The drill bit was not sharpened correctly from the factory and it drilled a hole way bigger than it should have. It should drill .492" dia and it drilled .509"!l

Pros

Used for 6160 aluminum drill hole exactly to size

Cons

Requires more force and pressure to use compared to standard drill bits

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Comments (2)

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Daniel Beaver

July 22, 2023

Worked OK to drill through 6062 aluminum. Didn''t drill a lot of holes but enough to know at least it''s not a garbage drill like some.

Wesley Carreras

July 13, 2023

I read several reviews reviews that stated they were not 6mm. They are correct in saying the size is under 6mm. Unfortunately I needed to be exactly as specified in the description. This item is useless for my purpose.

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