I purchased a masonry cutting bit from this brand and was completely disappointed. According to my experience, the product was incredibly dull and barely made a dent on the surface I was trying to cut. I expected a much higher quality product from an industrial and scientific brand. The only pro I can think of is that the bit didn't break during use. However, the cons far outweighed that small positive as it was a complete waste of money. I would not recommend this brand's cutting tools toβ¦