Spool Cap Specification: with for Greenworks spools, 16ft 0.065 inches, with original spools models 29252 and cap covers models 3411546A-6. Models: 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 ABS, durable for . 3411546A-6 replacement spool cap for Greenworks protects trimmer line fixed spool, prevent weeds from getting stuck inside, avoid to the trimmer. Easy to install, no needed to install, simply unhook the old 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 Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.