Spool Cap Specification: Compatible with Greenworks spools, 16 ft 0.065 inches, compatible with original spool models 29252 and cap covers models 3411546A-6. Compatible Models: Compatible with Greenworks weed eater string trimmer caps: 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 material, durable for use. Replacement spool cap for Greenworks protects trimmer line and fixed spool, helps prevent debris from getting stuck inside, and helps avoid damage to the trimmer. Easy to install, no tools required. Simply remove the old cap and snap this one into place over the 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: Lighting and display differences may cause slight color variation between the image and the actual item. Measurement may vary by +/- 1-3 cm.