Advanced PA6 Nylon Material: Our lawn mower replacement blades are made of high-quality PA6 nylon, which is stronger and more stable than ordinary plastic, and the blades are sharp, making lawn cleaning easier. Widely Used: This lawn mower replacement blade is suitable for models F016800183, FRT18A, FRT18A1, Art.46155, FRT20A1, IART 2520, IAT 20-1M, etc. (Due to the slightly different diameters across the entire range of mowers produced, compatibility is for reference only. Please check the product specification diagram carefully before purchasing.) EASY TO INSTALL: This plastic blade can be quickly replaced without tools and is very easy to install and replace. Compared with traditional metal blades, there is no rust problem. Affordable PackageA set of 100 reusable plastic replacement blades, enough for you to use and replace. A small size will be enough to mow your garden and lawn for a long time and get a large enough lawn area. Product Features: Plastic lawn mower blade, 84mm long, 20mm wide, large hole diameter 12mm, small hole diameter 7mm. Mainly check the diameters of the large hole and the small hole. If the diameters are the same, they can be installed.