7pcs 1/4" Shank Tungsten Carbide Double&Single Flute Straight Dado Router Bit Set, 3/4/5/6/8/10/12mm Cutting Diameter Trimming Cutter for Woodworking, Green

bit was sharp and worked well.

I needed a couple 5mm slots in a Trim Router jig I built. Two passes in 1/2" oak and the slots are perfect. The bit is still razor sharp.

First time I used the 4mm bit it broke in half. So I changed to the 5 mm and it broke. So I went to another brand and finished my project. I would not recommend buying this product.

These worked out great.

I took every precaution I could to try to make sure the bit wouldn’t break. The depth of the bit was only going in to about 2 layers of ply, so not deep at all, there were no knots in it’s path, and I went super super slow. Trying as best as I could to make sure it wouldn’t snap. I only went about a foot and boom, there it went. First time using this brand new bit and immediately became money wasted. If the bit can’t even do it’s job in my scenario then it shouldn’t even exist. Don’t waste your money. I gave it 2 stars because even though I haven’t needed to use the bigger bits, I assume they work fine, but I needed the smaller bits, and they were a waste.

Worked fine. Value for the money. Labelling could be improved. Size descriptions are vague.

But you're wrong. Plywood is manufactured in metric units. (Yes, even here in the USA).Use the right bit for perfect dadoes.

Knew they were cheap. Each bit is in its own small plastic case. There are no size markings on the shaft of the bit, so keep with case to determine size. Would have preferred manufacturer to sell this in a case that holds all bits together.