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Pros & Cons
pros
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Material Compatibility
Customers have reported positive experiences using M35 Four Spiral Flute Cobalt Step Drill Bits on various materials including wood, aluminum, fiberglass, and plastic. The TiAlN coating and four-flute design contribute to their effectiveness and durability. Some users appreciate the included storage case for organization and protection. However, a few customers have noted that these bits are not suitable for metal.
Durability
Customers express mixed sentiment regarding the durability of these M35 Four Spiral Flute Cobalt Step Drill Bits, with some praising their longevity and resistance to wear while others report that they do not hold up well.
Cutting Performance
Customers have generally positive opinions about the cutting performance of these step drill bits, with many praising their ability to make clean cuts quickly and easily through various materials including stainless steel, aluminum, and wood. However, some customers have reported issues with the durability of the tips, with a few experiencing breakage after only a few uses or limited success in cutting through thicker materials.
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Sharpness
Customers have mixed opinions on the sharpness of the drill bits, with most expressing satisfaction and describing them as good quality. However, some users reported issues with the edges being rough after use.
Highlights
Quality
Used cutting fluid, watched rpm's, & have had some bits last over a 100 steel cuts or more.
This is a well-made bit that cuts quite well.
It kept slipping out of my electric (corded) drill that has the manual chuck on it that is tightened with a tool.
I bought those for an rv project and so far i drilled through fiberglass and thin sheet metal.
Price
Great price and do the job that they are supposed to do!
For the money, i think they're good.
5 isn’t necessary and it’s half the price.
Shipping
Quick delivery and who doesn’t appreciate amazon.
Competitiveness
I can't speak to durability, but, based on this performance, i'd definitely buy from this brand again.
Overview
- How are reviewers describing this item?
great, through, metal, good and set. - Our engine has profiled the reviewer patterns and has determined that there is minimal deception involved.
- Our engine has analyzed and discovered that 76.0% of the reviews are reliable.
- This product had a total of 560 reviews as of our last analysis date on Jul 28 2024.
Helpful InsightsBETA
Posted by a reviewer on Amazon
Just didnt last as long as i would have liked
Posted by a reviewer on Amazon
Havent had opportunity to use this set yet
Posted by a reviewer on Amazon
I have not used this step drill yet
Posted by a reviewer on Amazon
I am building up my hex drive tools and assesories and didn’t have a step drill
Posted by a reviewer on Amazon
With cutting fluid and proper drill speed only had to cut 4 holes in 18 angle iron but had to finish with 35 yrs old bits because these gms dulled on those cuts
Posted by a reviewer on Amazon
Was ready to give a 2 star review but when i used these bits on mild carbon steel 2x2 1x1 18 wall square tubing they cut like a champ
Posted by a reviewer on Amazon
These are just fit i asked for to do the jobs ive got coming up so cheers and thank you
Posted by a reviewer on Amazon
Electricians plumbers general contractors putting a hole in metal is usually kind of a pain in the a
Review Count History
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