Hayter Power Trim, two wheeled strimmer. Graet for larger rough areas where the mower cannot go. This machine has a four stroke engine that powers thick nylon lines that will tackle the rough jobs with ease. This machine is not propelled but very light on its feet and easy to get into those hard to reach places. The height of the strimme lines is also adjustable to get a tight finish of leave the area a bit longer. Not as hard on the back as a conventional strimmer.