This is an OEM part sourced directly from the manufacturer. The nut is commonly found in snowthrowers and lawn tractors from Toro and Lawn Boy. This part is made of metal, and may be found in various locations in the machine, depending on model. Please be aware that there are different nuts used in the machine. Refer to the parts diag...Read moreram to be sure of ordering the correct part. You will require a wrench when replacing this item. The nut is available as an individual replacement part.