Niagara Cutter 17005311 Carbide Square Nose End Mill, Inch, Uncoated (Bright) Finish, Roughing and Finishing Cut, 30 Degree Helix, 4 Flutes, 2.5' Overall Length, 0.250' Cutting Diameter, 0.250' Shank Diameter

I don't have much history with end mill bits so I'm no authority on them. I can only say for this reason I did a lot of reading and shopping around before spending this much on one tiny little drill bit. Blade pattern had much to do with it but I wanted confidence in quality as well. I didn't want to waist money on something too cheap that wouldn't hold up to the job at hand, but I would only be using it non professionally at home for small projects and chances are I'll only use it a couple times so I certainly don't need to spend 2 days pay either. The perfect size and all was proving near impossible to find without paying 30 to over 100 dollars.Bottom line, I settled on this and I'm very pleased with it's performance. I just used it on some home projects to do some shaping on some aircraft grade aluminum but pushed it hard, put it to the test (so to speak) and it did the job well and is still in excellent condition for future projects. I don't know how it would hold up to steal milling as I haven't used it for that but I can recommend for aluminum.

This is a quality cutter. I use it in my Shapeoko 2 CNC mill with great results.It is also durable. I screwed up and left my machine unattended while milling aluminum and came back to find that the valley in the aluminum had clogged and ended up catching the bit, so now it was cutting very deep gouges through the plate. Rather than break, it just kept chewing away.The workpiece was destroyed (*sadface*) but the endmill seems to have survived the encounter and continues to cut just fine. I will microscope the endmill in the near future here to see what the actual damage is; but I am still very impressed this bit did not break.

Well made end mill that cuts well. Here's the problem. The specs don't mention how long the shank is. The picture indicates roughly half the overall length of 2". Unfortunately for me, the shank is much longer than half the total length leaving me way short of what I need. It's a good product but the picture representing the end mill is very misleading.

Good as described

Made with precision in the USA, fantastic cutter. Cost the same as import endmills but with the quality of an American product. I have used this bit to make several plunge cuts on 4140 chromemoly steel and it is one of the best end mills I have purchased yet.

Niagra Quality doesn't disappoint.

Works great on polymer. Aggressive cut.

Did whatIt was supposedTo do