20pcs 10° 15° 20° 30° 3.175mm Carbide PCB Engraving Drill Bits CNC Bit Router Tool 0.1mm

Good

Nice set of detail bits. Use on my CNC for small detail work and they do a good job. Not sure how long they last since I haven't used them much but definitely a nice cheap option to experiment with and find what works for you.

Great for fine work on my desktop cnc. Only used for wood so far. Fit my 1/8" but adapter very well. Haven't broken one yet.

love this bits

Performs as stated

The bits are nice enough. For the price they work fine, but I ended up with 3 10° bits and 7 15° bits. Did end up with 5 each of the 20° and 30°.

There are no 10° v-bits in this pack. The case that is labeled "10° and 15°" has all 10 v-bits at 15°. I specifically bought this pack for the 10° v-bits, so it is essentially useless to me right now. I am suspicious they haven't provided anyone with 10° v-bits and don't actually offer them because it can be tricky to tell the difference between them at such small angles. (I have contacted the seller to see if they will actually be able to provide me with the 10° v-bits and will edit this review if they ever do.)The best way I found to check the angle was to scribe a line at 7.5° and a line at 5° off the edge of a board. Put a straight edge up against the edge of the board and the shank of the v-bit against the straight edge. Check the cutting surface against the 2 lines to see which fits best. See photos for reference.

Tip breaks real easy, for pcb carving. Buy something better.