I tried them yesterday and like them. I cut 6 layers of fabric with ease too. My only concern was with them being so sharp on whether they will damage my self-healing cutting mat but so far I don't see any damage. It even felt like it was going thru the mat when I went to cut too but nope, no damage so I'm sold. I had just bought some titanium blades at a local fabric store and cried when I saw the price them were going for....................$20.27 for 1 blade. EGADS!!!!!
I did see 60mm titanium blades on the Amazon but not by the same company so didn't want to try them but for the price I might with the prices getting so high these days.
Thanks for your recommendation.