I am giving this blade purchase 5 stars, however, I ended up purchasing the wrong one, ended up trying to modify it and did not have a good experience. Whether it was my fault for not searching right or Jack's fault for not having a powerful enough search engine, I don't know. After calling their toll free number, it just wasn't going to work to try to return anything, so I ate the cost. On the phone they were very good at ordering the exact right blade set. I have since received that order and am very pleased with the quality and service from that order. My advice is to call instead of using the search engine, just call and get the right one the first time.