Durable material: beard trimmer accessories lawn with sturdy plastic buttons, lawn mower head lawn, aluminum with aluminum nut on the left (M10x1.25), you can use it for a long time. Efficient: The replacement spool makes the tedious work of manual threading easier. It is very suitable for mowing the lawn and can be optimized to achieve the best precise mowing effect and mowing efficiency. The cutting speed is higher. Size: The size of the nylon cutting head is 12 x 7.5 cm, the length of the wire is 2 m, the diameter, the thread width is 2.4 mm and the nut size is M10*. 1.25, optimized for high performance. Extremely high speeds. Strong compatibility: The self-contained spools of these nylon cutting heads are suitable for all types of cutting heads. most types of lawn mowers lawn and are very compatible.