10Pcs Nano Blue Coat Engraving Bits, 20 Degree 0.1mm Tip 1/8" Shank Conical V-Bit

Nice price for precision bits. Use them for a few projects and then replace with a nice new perfectly sharp one.

Overall I'm impressed with these bits. The value far exceeds by expectations. Based on some other reviews, I was expecting sub-par performance from these bits. However, after 3 jobs I see great results and will continue using them. 10 bits at this price is a tremendous value.Update: After some additional time with these bits, I've noticed that they have an issue with clearing chips while cutting hardwood in particular. When cutting a 5mm deep v-channel in maple, the resulting channel is hard packed with dust/chips. Adding an additional finishing pass helps marginally, but there is still lots of manual work to clean out all the chips from the cut.I still recommend these bits since they are great for the price, but know that more cleanup work than expected may be needed when cutting some materials.

Pretty much the best bang for the buck if you are working with wood on a small CNC. I don't think I would recommend anything more robust than aluminum with these, and even that would need to be a very shallow pass.

They are really good. Precise and sharp. Both PCB-s are milled using those bits. Tracks are 0.2mm and 0.3mm. Milled on regular Genmitsu 3018-PRO with upgraded Z-AxisSupport is very helpful!

As expected.

Long lasting when milling PCB on FR4.

Maybe my settings are wrong, but they don't cut any better than the cheap HSS ones.

The media could not be loaded. These little 30 degree bits are great I use them on hardwood like Purple Heart and African Padauk that is very hard and the engraving that I do takes 3 to 4 hours they stay sharp and make a very clean cut. You will absolutely love what they do and the money you save is crazy. Don’t pay attention to the bad reviews I’ve been doing woodworking for 35+ years and have tried them all I’m very happy with the performance of these bits.