This part is a replacement wing nut knob. This is a genuine OEM part made by MTD and has been sourced directly from the manufacturer. If the current knob is broken, defective, or has become detached, this part can be used as a replacement. It is intended for use with several different types of small engine power equipment.This knob functions as a standard wing nut and has multiple different applications depending on the type and model of equipment it is intended to be used for. When working on or near an engine, always ensure that the equipment is powered off and completely cooled down before attempting to undergo any repairs. For more accurate information on how and where to install this wing nut knob, the appropriate owner's manual and equipment diagrams should be referenced. This wing nut knob is suitable for use on a variety of paint sprayer, yard vacuum, tiller, and spreader models manufactured by MTD, Craftsman, and Yard Machines. It is a genuine OEM part and thus is made of high-quality, durable plastic. Part sold individually.