OCGIG 4pcs Titanium Coated Countersink Chamfer Tool Deburring Tool Set Metal Wood Drill Bits Zhongbo Business

Good stuff, works well

I certainly didn't expect these to be amazing quality at the price point. They are fine and do the job , but I was surprised to see them just thrown in a bag together where they could bang against each other during shipping. I'm not cutting anything hardened, mostly wood and plastics with the occasional soft metal and they are doing the job.

For being cheaper they work great

I saw versions of this on youtube and decided to see for myself. They looked good coming out of the package - a thin film of packing grease on them. The smaller two had a bit of a burr, but that came off easily with a needle file. I tried all four in some aluminium and they cut extremely well, making a nice curl shaving. I tried the largest and smallest in some steel and they still did a great job. Very Happy with these.

Machining leaves poor cutting edges which themselves do not reach to the full width of the cone. I have not used them yet but if they fail to perform I’ll update this.

Yes, as some other reviewers mentioned, these come with burs. However, the burs flake off with light pressure, and don't affect use at all. The quality of these isn't extremely high, but they're cheap and do the job well enough. If you're using these a couple of times a week, they'll probably work great. If you need a tool that will work for a production run of 1,000 parts, you might want to look at a higher quality tool.

these chamfer / deburring bits do the job but I was hoping for less chatter regardless of speed or material.

Work’s well