I have used these blades for about 8 years now, I have rebuilt the saw twice, and can not count the number of these blades I have used. In fact I just put in 6 worn out ones in the scrap pile for recycling. This saw and blades are one of the best I have found. I am amazed at how well they cut steel and the thickness of steel that they will cut. I will keep purchasing these blades as long as I am able to work in the shop.