Quick Loading: The trimmer head is designed with a bump-feed loading mechanism, allowing for easy and convenient line advancement during use. Left-Hand Thread: Featuring a left-hand thread size of 10mm, this trimmer head ensures a secure and tight fit on compatible Husqvarn models. Compatible with Multiple Models: Specially designed for Husqvarn brush cutter models including 128L, 128LDx, 128RJ, 323L, 327LS, 324Lx, 223L, 324LDx, 327LDx, 233RJ, 327 RJx, 128R, 323R, 323R II, 324Rx, 325Rx, 325Rx, 325Rx, 325Rx, 325Rx. 25RDx, 3 27Rx, 327RDx, 133R, 226R, 233R, 525RX. 【Design】Made of materials, this trimmer head features a sturdy 12cm outer diameter and can withstand frequent and rigorous use. Package Contents: Each package includes 1 trimmer head, providing you with a reliable and practical solution for your trimming needs. Note: The data are all manually measured, please allow an error of 1-3cm. Due to differences in light and display, there may be some color differences, please refer to