【Durable Material】The garden accessories for brush cutter are made of high quality metal, sturdy and durable, long service life and high reliability. High hardness, no rust, very durable, it is an essential lawn accessory, suitable for most lawn mower working heads. 【Wide range of applications】The mower gear box knife nut fixing device is the ideal choice for mowers, brush cutters, shredders, etc. 【Easy to use】Use this fixing kit to fix the mower blade in the rotating position. They are a replacement to replace your brush cutter gearbox head. 【Perfect Accessories】They are a good replacement kit for lawn mowers, can perfectly replace damaged parts, are very versatile and suitable for household, agriculture, wood industry or forestry.