Spool Cap Specification: Compatible with Greenworks spools, 16ft 0.065 inches. Fits original spool models 29252 and cap cover models 3411546A-6. Compatible with Greenworks string trimmer models: 21332, 21222A, 21602, 21062, 21132, 21242, 21282, 21312, 21302, 21342, 21362, 21262, 2100202, 2100302, 2100702, STBA40B210, ST40B410, BST4000, ST40L00. Replacement spool cap 3411546A-6 for Greenworks grass trimmers, made of high-quality ABS material, durable and reliable. This spool cap helps protect the trimmer line on the spool, prevents debris from getting caught inside, and helps avoid damage to the trimmer. Easy to install – no tools required. Simply remove the old cap and snap the new one into place in seconds. Material: ABS. Color: Green. Package Contents: 2 x Cap Cover. Note: Light and screen display settings may cause slight variation in color compared to the actual item. Measurement may vary by +/- 1-3 cm.