There are three sizes. I like them so much I bought all three.
A 40 size I have a Super Tigre 51 on it.
A 60 size I used two different engines on it. First a OS 91 4/stroke and a Super Tigre 75.
A 120 size I have a Zenoah G-23 gas engine on it.
They all are ARF, not much building.
They are made by Hangar 9 sold through Horrizon.