Spool Cap Specification: Compatible with compatible with Greenworks spools, 16ft 0.065 inches, compatible with original spools models 29252 and cap covers models 3411546A-6. Compatible Models: Compatible with 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 compatible with Greenworks made of ABS, compatible with use. 3411546A-6 replacement spool cap compatible with Greenworks protects trimmer line fixed spool, prevent weeds from stuck inside, avoid damage to the trimmer. Easy to install, no tools needed to install, simply unhook the old cap and this can be snapped in place over spool line, ready to go in seconds. Material:ABS colour:Green Package Contents: 2 x Cap Cover Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.