We sold these at the dealership I used to work at. They used the same 31cc engine IDC, ryobi,and later MTD used. They were really a very cheaply made engine , they were heavy and vibrated a lot, your hands would go numb after using one for awhile. They weren't anywhere near Stihl or Echo for quality but LB sold a bunch of them.
You can still find variations of the same engine on some Yard man or Troybilt trimmers.
