This is a knob handle that is used on various types of lawn and garden equipment. It is responsible for helping to make adjustments to the upper handle of the lawnmower or other machine. If the knob handle no longer works, is broken, or falls off, adjustments can no longer be made to the equipment. If this situation occurs, the knob handle will need to be replaced.Take a look at the knob handle and determine if it has been damaged. It could have cracks, broken areas, or excessive scratches that make it hard or impossible to use. If the knob handle is not present, this also necessitates a replacement. The part is easy to replace and requires no tools to install. Simply remove the old handle and place the new one in the same location.This is an authentic OEM replacement knob handle that is directly sourced from the manufacturer. It is sold as an individual component. The knob handle is used on lawnmowers, snowblowers, string trimmers, leaf blowers, wood chippers, and edgers. It fits various models offered by MasterCut, Yard-Man, Bolens, Montgomery Wards, Huskee, MTD, Yard Machines, Murray, Troy-Bilt, Ryobi, Cub Cadet, and Craftsman.