This is a genuine replacement blade which is supplied directly from the original equipment manufacturer for use with Snapper and Simplicity lawn mowers. It is secured under the deck to cut the grass. Over time the blade may wear out or get damaged eventually requiring replacement to maintain a clean cut lawn. Dull or worn lawnmower blades...Read more can cause the grass blades to tear and fray causing a yellowish coloring to the top of the lawn. It is a high-quality component which is made of durable metal and is sold individually. Refer to the owner's manual and the diagrams of your model for the correct installation. You will need a wrench to remove the old one and secure the new one.
The wing-nut is made out of metal and attaches to various other parts. It is a genuine OEM sourced part which is specially designed for use with lawn tractors made by Snapper and Simplicity. This part is available as an individual replacement even though several may be needed. It will need to be replaced if it becomes broken or stripped.