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The Cobalt Drill Bit Set includes 10 high-speed steel drill bits made from M35 Cobalt Steel, designed for precision and durability. With a Rockwell hardness of 67, these bits are perfect for drilling through hard metals like stainless steel and cast iron. The set comes organized in a sturdy plastic case for easy transport, ensuring you have the right tools at your fingertips for any project.
G**E
good drill bits, but....
The drills are very good. Unfortunately, there were two drill bits missing from my set - 6.5mm and 8mm.Otherwise, good, sharp bits.
A**R
I Got Them To Measure the Inside Diameter of Fuel and Vacuum Lines
I suspect they're great for drilling but I needed to use them as "Pin" gauges.
M**X
Drill Bits
As described
M**P
As Described
Exactly as described. Drill bits arrived nice and sharp. Thanks!
J**G
With everything being made with metric parts, these type of sets are over due.
Very nice set for the money, complete set of smaller sizes, able to work on many different materials. I would recommend them.
A**.
Useless for stainless steel but work fine for soft materials
Did not meet expectations based on the vendor's description that they were suitable for drilling into hard metal. Barely made a dent in 18 gauge stainless steel sheet, which was my intended use and the reason I bought them. They worked beautifully for ceramic bisque, so at least I found a use for them.
B**K
Very sharp and true
I am very happy with these bits, they are accurate in size and are extremely sharp as I am using them on aluminum. I am impressed with the quality of these bits.
J**N
Better than expected
I had purchased brass and stainless pins for knifemaking and they were all in millimeter diameters. I came across these and figured for the money I would give them a chance. I figured if I got a few uses drilling into 3/16" carbon steel then they would pay for themselves. I was surprised that after repeated use they still produce larger metal shavings and drill right through that steel.
B**N
Cumple con mis espectativas
Pense que iba a traer el estuche que tiene en la foto pero lo importante son la brocas y si cumplen con mis necesidades
M**3
Good quality
Good quality
D**N
Cool
merci
A**E
Bon produit
Elles ne se cassent pas facilement
A**R
easy order
Not good for the stainless drill
Trustpilot
2 months ago
4 days ago
