
Trimmer Head Universal Model Compatible with All Machines. Made of solid cast aluminum alloy, high hardness, anti-impact and anti-rust, not easy to crack under heavy outdoor trimming workload. Precision internal thread and central hole processing, perfectly match most mainstream trimmer spools, tight fit without loose shaking during high-speed rotation. Thickened outer edge structure effectively protects the internal nylon line spool from collision, mud and gravel abrasion to extend service life of trimmer head. Standard matching size design, direct clip-on replacement without extra modification, easy disassembly and installation to replace broken or deformed old spool caps. High standard casting manufacturing process, smooth inner and outer surface, stable rotation without abnormal noise during long-hour lawn cutting work. Wide universal compatibility, suitable for household gardening, commercial landscaping, orchard weeding and roadside greening trimming work.