High-quality materials: Made of high-quality metal, stable performance, high reliability, and not easy to corrode. Easy to install: Use this fixing kit to fix the mower blade to the rotating head. Easy to use: The product is easy to use and very useful. It is stable and reliable and is a good replacement kit. General accessories: Upper and lower spacers, protective cover, anti-thread nut fixing kit is suitable for most lawn mowers. Scope of application: Suitable for most lawn mowers, brush cutters, and paper shredders.