Spool Cap Specification: Compatible with for Greenworks spools, 16ft 0.065 inches, compatible with original spools models 29252 and cap covers models 3411546A-6. Compatible Models: Compatible with for Greenworks 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, prevent weeds from stuck inside, avoid damage to the trimmer. Easy to install, no tools needed to install, simply unhook the cap and this can be snapped in place over spool line, to go in seconds. colour: green Material: ABS Package Contents: 3 x Spool Cap 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.