https://www.youtube.com/watch?v=4LFhwMHx0Is

The PONSSE H7 is designed to make the handling of large diameter trees easier and more economical. It features improved feed roller geometry for bigger stems. It is a compact, solid, and powerful processor head for a wide variety of logging sites. This design shares a lot of features with the H8 head including powerful feed capabilities and an excellent power-to-weight ratio. For more information, see the video or visit https://www.ponsse.com/en/