Replacement spool 29252 compatible with Greenworks 24V, 40V, and 80V cordless string trimmers. This spool fits models 29252 and 29092, and cap covers model 3411546A-6. Features 0.065 inch single line auto feed design compatible with Greenworks string trimmers and edgers including models 21332, 21222A, 21602, 21062, 21132, 21242, 21282, 21312, 21302, 21342, 21262, 2100202, 2100302, 2100702, STBA40B210, ST40B410, BST4000, and ST40L00. Each spool is pre-wound with 16 feet of 0.065 inch weedeater line, ideal for electric string trimmers. Constructed with high-quality ABS plastic and durable nylon line for extended use. Designed for Greenworks single line 24V and G-MAX 40V string trimmers. Auto feed mechanism uses centrifugal force for smooth line release and efficient cutting performance. For safety, always wear eye protection and long pants when operating. Disconnect power before installing or removing accessories. This replacement spool is intended for trimming young grass; for thick weeds, use a blade or other appropriate tool. Material: ABS, nylon. Color: black, blue, green. Package includes: 8 x replacement spools, 2 x spool cap covers. Product may vary slightly in color due to lighting and screen settings. Measurement tolerance: +/- 1-3 cm.