Recently purchased an Olfa Ergo cutter and with the first cut it skipped n this was a continuous issue. After reading a number of Olfa blade reviews stating folks had the same issue, I decided to try some other blades wanting to make sure it wasn’t my cutting, so I used a scrap of jean fabric. The Olfa blade again skipped. Then put in one of these new blades— NO PROBLEMs at all. Durability- haven’t used one long enough to judge.