Durable material: lawn mower accessories with durable plastic knobs, lawn mower head, aluminum with left aluminum nut (M10x1.25), you can use it for a long time. Effective: The spare spool facilitates the tedious work of manual threading. It is very suitable for mowing the lawn, and it can be optimized to achieve the best precise mowing effect, and the cutting efficiency is higher. Size: Nylon cutter head size is 107.5cm, nut size is M101.25, optimized to achieve extremely high performance. Strong compatibility: The self-contained spools of these nylon trimmer heads fit most types of lawn mowers and are highly compatible. Features: 1. It is an ideal choice for cutting low grass, tall grass and weeds. 2. Fits most trimmers. 3. Compact, robust, uninterrupted when mowing and clean. 4. Operable and easy to use effectively. Specifications: Color: black Product size: (as shown in the picture) Cutting head: 107.5cm Nut: M101.25 Quantity: 2 Package Contents: 2* Brush Cutter Head