The Worx WA0043 replacement wheels are for the grass trimmer, edger, mower models WG160, WG167 and WG175. Use the wheels in trimming mode to act as a mini lawn mower to maintain consistent grass cutting height without scalping. The wheels used as a mini mower make it easier to access hard to reach areas under lawn furniture, shrubs and ornamentals in the yard. Flip the wheels to the other side to smoothly glide along sidewalks, driveways and landscape for perfectly maintained edges at a consistent height.