Replacement Spool 29252 Trimmer Replacement Spool for 24V, 40V, 80V Cordless String Trimmer. Replacement spool compatible with models requiring 29252 and 29092, replacement cap covers: 3411546A-6. 065 Single Line Auto Feed Spool for string trimmer / edger / models: 21332, 21222A, 21602, 21062, 21132, 21242, 21282, 21312, 21302, 21342, 21262, 2100202, 2100302, 2100702, STBA40B210, ST40B410, BST4000, ST40L00. This replacement spool refills 16ft 0.065 inches line for Electric String Trimmers. High-quality ABS spool and Durable nylon string trimmer line, grass trimmer edger line, sturdy enough, strong enough for long working life. Replacement spool for Single Line 24V and 40V String Trimmers. Auto feed spool replacement parts utilizing centrifugal force and aerodynamics to reduce drag and achieve fast cutting. Note: Always wear eye protection and long pants when using this product to avoid injury. Unplug tool before changing, installing, or removing accessories. This cordless parts refill is only suitable for young grasses. Strong weeds may require other tools such as blades to trim. Material: ABS, nylon. Color: black + blue + green. Package Contents: 8 x Trimmer replacement spool, 2 x Replacement spool cap cover. Only the above package content, other products are not included. Note: Light and different displays may show the color of the item a little different from the real thing. The measurement allowed error is +/- 1-3cm.