2pcs 0.6mm with 4mm Shank 2 Flutes HRC60 Solid Carbide Flat Square End Mill CNC Milling Cutters Router Bits Sprial Bits

This end mill cuts every bit as good as some $60+ tools I have at work. I bought these for a personal project as I won't risk breaking work tools and having to replace them at their cost. I might use their 1/2" or 1/4" end and ball mills, but something this small is simply going to break at some point... but I haven't reached that point yet. I have cut 6061 and like aluminum, 360 brass, and some 145 copper. Obviously going slow and using small stepdowns/stepovers, but I don't cut conservatively within that envelope and these are still going strong.They aren't in the quality class of some of the high end tools out there, but they're also less than 1/10th of that price. Watch what you want to cut with them and they won't disappoint.

I used them on 3018 with and even 50 X-Y feedrate and 10 Z feedrate to cut -0.05 mm PCB board and they broke at just the starting of the job. Piece of junk. Don’t waste your money.

These end mills perform fantastically if you don't abuse them. Great for small details in soft metals.

Nice product for work.

Cuts really nice. They are also very durable, which is more than you can say about similar end mills from other manufacturers.