Spool Cap Specification: Compatible with Greenworks spools, 16ft 0.065 inches, compatible with original spools models 29252 and cap covers models 3411546A-6. Compatible Models: Compatible with Greenworks weed eater string trimmer cap: 21332, 21222A, 21602, 21062, 21132, 21242, 21282, 21312, 21302, 21342, 21362, 21262, 2100202, 2100302, 2100702, STBA40B210, ST40B410, BST4000, ST40L00. 3411546A-6 spool cap, grass trimmer spool cap cover for Greenworks made of high quality ABS, durable for use. 3411546A-6 replacement spool cap for Greenworks protects trimmer line fixed spool, prevents weeds from getting stuck inside, helps avoid damage to the trimmer. Easy to install, no tools needed. Simply unhook the old cap and snap this into place over the spool line, ready to use in seconds. Material: ABS Color: Green Package Contents: 2 x Cap Cover Only the above package content, other items not included. Note: Light and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement may have an error of +/- 1-3cm.