Replacement spool 29252 compatible with Greenworks 24V, 40V, and 80V cordless string trimmers. Replaces models 29252, 29092, and cap covers model 3411546A-6. 065 inch 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. Refills with 16 ft of 0.065 inch weedeater line for electric string trimmers. High-quality ABS spool and durable nylon trimmer line. Suitable for grass trimming and edging. Designed for long-lasting performance. Compatible with Greenworks single line 24V and G-MAX 40V string trimmers. Auto feed design uses centrifugal force and aerodynamics to reduce drag and enhance cutting efficiency. Safety note: Always wear eye protection and long pants when operating. Unplug the tool before installing or removing accessories. This replacement spool is intended for light-duty use on young grass. For thick weeds, use appropriate 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 Content limited to items listed. Other accessories not included. Note: Lighting and display settings may cause slight color variations between image and actual product. Measured dimensions may vary by +/- 1-3 cm.