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 attach the mower blade to the rotary head. Easy to use: The product is easy to use and very useful. It is stable and reliable and makes a good replacement kit. General accessories: Upper and lower struts, protective cover, anti-thread nut mounting kit fits most lawn mowers. Field Application: Fits most lawn mowers, brush cutters and paper chippers.