【Advantage】- The universal lawn mower gearbox blade nut fastener kit has exquisite workmanship, good wear resistance, stable performance, high reliability, easy installation. 【Material】- Made of high quality metal, it is sturdy, durable, has a long service life and high reliability. Universal, suitable for most trimmers. 【Easy to Use】 - Use this attachment kit to fix the trimmer blade in the rotating position. They are a replacement to replace the head of your brush cutter gearbox. 【Application】- The trimmer gearbox blade nut fixing kit is ideal for lawn mowers, brushcutters, mulchers, etc.