10 Pcs High Speed Steel Cobalt Drill Bit Set 2 Pcs of Each 1mm(3/64"), 1.5mm(1/16") 2mm(5/64") 2.5mm(3/32") 3mm(1/8") Jobber Length Twist M35 Metal Drill Bit For Stainless Steel And Hard Metal

These appear to be metric drill bits, and are just similar to the English sizes. Even the 1 mm size held up to drilling into redwood, with being careful with the drill. The bits weren't as long as the ones I was replacing, but for the price I say 5 stars.

Just started using them, but they seem to be a good value for the money. Sized correctly, priced well, but I cannot really offer much thought on durability as I'm going to use them on plastic for hobby work.

I have to half some of my stainless steels for certain projects, these drill the hole nicely without breaking.

Totally worthless.

I needed 1mm size, and this set provided excellent product. Drilled with Dremel and penetrating oil at faster than recommended RPM, but bit performed wonderfully through hardened steel. I could not be happier.

Like other reviewers I found these drill bits to be brittle. I was carefully drilling a small 2mm hole in soft aluminum when the first bit snapped. I put the second bit in the dril and it snapped! No excessive force or speed was used. They would never drill through stainless steel as advertised.

I needed some extremely small bits to do some jewelry repairs. Worked great!

Will be used for hobby work.

Mainly drilling metals so far its very good