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Your cart is empty.Product Description
Features Of Our M35 Cobalt Drill Bit Set
Industrial Grade Design
135 ° standard industrial grade double rear edge angle
Smooth & Flat Grooves
Beneficial for high-speed operation and fast chip removal
Universal Handle Type
High temperature quenching is not easy to break, with strong impact force and high hardness
Widely Used
Package: Includes 13pcs of steel twist drill bits: 1.5mm, 2mm, 2.5mm, 3mm, 3.2mm, 3.5mm, 4mm, 4.5mm, 4.8mm, 5mm, 5.5mm, 6mm, 6.5mm
Other's Metric Drill Bits
Widly Used
Average Rob
Reviewed in the United States on March 15, 2025
Returned because multiple bits were clearly bent. No indications of prior use, so probably manufactured that way.
R D. Grayson
Reviewed in the United States on February 8, 2024
This is the second set I received from them and they are just not worth it. The first set had almost every bit bent and on running true. If you tried to roll them on a sheet of glass there was a noticeable curve an they would slide instead of roll. The second set was a little better but they were not sharp. Once sharpened they were ok but I don't think the heat treat on them is good because the metal was too soft.
kyle howard
Reviewed in the United States on June 27, 2023
You pay for what you get and so far they have done the job but I haven't done any metal drilling. I am not sure they will hold up well if I did. For hobby work in plastics, they are great!
Gerhard M.
Reviewed in the United States on August 29, 2022
that's a real good value for the money.
Kizmit99
Reviewed in the United States on March 11, 2022
I bought these almost a year ago to have a set of metric bits on hand. Today was the first time I had a need to use them... Wow! They would not drill into (relatively) soft steel at all. The bit made a small divot, then no more. I switched over to a close inch equivalent bit (from a harbor freight drill set no less) and that bit had no problem completing the hole. This set is worthless - save your money. Also can confirm what others have said about the packaging having no mention of "cobalt" anywhere.
Denis R.
Reviewed in the United States on January 19, 2022
Never even used these! They came in with damaged tips already. They also don't look like they have a hint of cobalt.
Jesús H.
Reviewed in Mexico on August 20, 2021
Funcionan para plástico, madera, etc. Pero para nada metales.
Csaba Vandor
Reviewed in the United States on December 18, 2021
Drill bits are supposed to be made of hardened metal - this one is not. I've never seen a drill bit so soft that it permanently bends. A hardened drill bit will break if forced, but these just bend. Should work ok for soft materials, but would not recommend for steel.
Nancy Hart
Reviewed in the United States on April 30, 2021
Shipped as advertised, good quality, as described.
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