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 spool line in seconds. Color: green Material: ABS Package Contents: 3 x Spool Cap Only the above package content is included; other products are not included. Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. Measurement allowed error is +/- 1-3 cm.