Just this past Monday, I ordered a combo of your balancer and grinder. I was very pleasantly surprised to see it on Wednesday. I put it to use that very night and am blown away. You pieces are very easy to use, do an excellent job, and improve my mowers' performance immensely. I will admit to less than ideal blade maintenance (read: every 75 hours or so). With a new set of edges on, we litterally took 30 mins off of our 10 hour days. Additionally, we do not have to scrape the decks mid day when the dew is gone and the mowers discharge much better. Knowing what I do now, I dont know why I waited to long to make such a wise investment. Thank you.