FoxAlien 2030456090deg 0.1mm Triangular CNC Router Bits Set, 18 Shank Engraving Carving V-Bit with Nano Blue Coating Sharp Pyramid Bits for Acrylic

This product is a set of 10pcs triangular CNC router bits, with a 30-degree 0.1mm engraving bit and a nano blue coating. They are intended for use in acrylic, wood, MDF, aluminum and lettering sign making. Reviewers have had a mixed experience with this product, with some praising its durability and longevity whilst others have struggled with breakages and premature wear. The short length of the bits has been noted as a drawback, although this may not be an issue for all. One user had great success when cutting dies to stamp coins, with the first bit holding up well and remaining nearly new after a prolonged period of use. This user noted that they had a hobby-level CNC machine and did not push it too hard, which may have contributed to the bit's longevity. Another reviewer found that the 60-degree bits lasted a long time and had not worn out after three months of use on solid surfaces. However, they did note that the durability may be user error and that they had broken several bits by using the wrong one for the task. Overall, the bits seem to be effective and suitable for certain tasks such as engraving acrylic, but their durability and suitability for more challenging materials may be variable.