Electric roller garden shredders feature a rotating steel gear placed inside the machine. This is equipped with an internal side branche pusher which channels the material towards the blades. Compared to classic electric models with blade disc, roller garden shredders are less noisy and more specific for branch shredding. Shredding is faster and the machine needs less maintenance since it stays sharp longer.
However, the roller is less suitable for shredding green material - since it is not suitable for leaves and grass - and shredding is coarser.