A lot smoother, quieter, and less vibration. Im actually very surprised the difference it made to tell you the truth. I was a little skeptical, ((as i always am)) on everything but it really helped the machine performance incredibly. I used it on my other machines as well. def a difference. Thank you Gaston for sending them to me. I appreciate it! I at first had a little trouble trying to figure out how to use it compared to the other one. but finally figured it out after a few shots.