Brush cutter

A brush cutter (also called a brush saw or clearing saw) is a powered garden or agricultural tool used to trim weeds, small trees, and other foliage not accessible by a lawn mower or rotary mower. Various blades or trimmer heads can be attached to the machine for specific applications.

It consists of:

A power unit held close to the body.
A pole through which the power is transmitted.
A rotary cutting head at the opposite end of the pole to the power unit.