Replacement spool 29252 compatible with Greenworks 24V, 40V, and 80V cordless string trimmers. This spool fits models 29252 and 29092, and replacement cap covers model 3411546A-6.065. Designed for 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. Single line auto feed spool refills 16 feet of 0.065 inch weedeater line for electric string trimmers. Made with high-quality ABS spool and durable nylon trimmer line, suitable for grass trimming and edging. Built to last with strong, sturdy construction for extended use. Compatible with Greenworks single line 24V and G-MAX 40V string trimmers. Auto feed design uses centrifugal force and aerodynamics to reduce drag and enable fast cutting performance. Note: Always wear eye protection and long pants when operating this product to avoid injury. Disconnect power before installing, removing, or changing accessories. This refill is intended for use on young grass only. For thick weeds, use alternative tools such as blades. Material: ABS, nylon Color: Black, blue, green Package contents: 8 x Trimmer replacement spools, 2 x Replacement spool cap covers. Only the listed items are included. Note: Lighting and display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.