It's a BCZ2500S and is a great trimmer. I bought it used and have used it for the past 4 years. Sure, I don't need a commercial trimmer for homeowner work, but I like the increased power for my hill along the creek line. Couldn't get it started, trigger was sticking(I supplied the part for this), and the start/stop switch no longer worked. They called and repaired it for $112. Sure, that sucks, but I still couldn't have replaced it with a Craftsman or equivalent for that and only had 1/2 the trimmer.