Replacement spool 29252 compatible with Greenworks 24V, 40V, and 80V cordless string trimmers. Fits models 29252, 29092, and cap covers model 3411546A-6. 065 single line auto feed spool compatible with Greenworks string trimmer, edger, and weed eater models: 21332, 21222A, 21602, 21062, 21132, 21242, 21282, 21312, 21302, 21342, 21262, 2100202, 2100302, 2100702, STBA40B210, ST40B410, BST4000, ST40L00. This replacement spool refills 16ft of 0.065 inch weedeater line for electric string trimmers. Made of high-quality ABS and nylon material for durability and long-lasting performance. Suitable for grass trimming and edging tasks. Designed for use with Greenworks single line 24V and G-MAX 40V string trimmers. Auto feed mechanism uses centrifugal force and aerodynamics to reduce drag and enable efficient cutting. Safety note: Always wear eye protection and long pants when operating the tool. Unplug or remove the battery before installing, changing, or removing accessories. This replacement spool is intended for light-duty use on young grasses. For thick or tough weeds, use alternative cutting tools such as blades. Material: ABS, nylon Color: black, blue, green Package includes: 8 x Trimmer replacement spools 2 x Replacement spool cap covers Note: Colors may vary slightly due to lighting and screen display differences. Measurement may vary by +/- 1-3cm.