High-quality materials: Aluminum cutter head is made of high-quality aluminum, which is wear-resistant and durable, and has a longer service life. The line is made of high quality nylon, which is sharper and stronger. More convenient for weeding: Grass trimmer line head adopts double thread design, used for cutting and thinning, it is a multifunctional garden tool. It is suitable for slopes, corners and other hard-to-clean places, with more flexible weeding ability. Easy to use: We provide a complete mowing tool kit, including installation tools and installation parts. The installation steps are simple, you can assemble it by yourself to save labor cost. General size: The brush cutter trimmer head size is: 45 x 59mm, the diameter of the thread is 2.4mm, the size fits perfectly and it is not easy to fall off. The nylon line is easy to replace, which greatly facilitates your work. Wide Application: Suitable for all common left-hand thread brush cutters and electric brush cutters, such