The Crown Mower is a small hand held pruning knife. Several standard sizes are available: Ø120mm, Ø140mm, Ø160mm, Ø180mm, Ø200mm, Ø220mm, Ø250mm (4.72″ up to 9.74″). Also, this mower can be carried out with either an electrical or a motor drill machine. Since it is a hand held pruning machine, there is also an ergonomic backcarrier available.