Autofeed System Replacement Spool The string trimmer replacement spool is compatible with the Flymo lawn mower, and can use centrifugal force to transport the trimming thread as needed, effectively reducing the tedious work of manually winding the spool. High Efficiency: It is less drag for more efficient cuts . The Autofeed System Replacement Spooleases the tedious work of hand-winding spools and save your time. Premium Quality: Premium ABS and Nylon fabric. The Strimmer Spool Line is made of high quality ABS and nylon resin fabric. which gives the string trimmer line better flexibility and durability. Easy Installation Do no additional tools are required, just remove the old spool line and replace it with a new one to complete the installation, keep your grass trimmer performing. Compatible with FLYMO mower models: cONTOUR 500 XT, POWER TRIM 500 XT, MINI TRIM AUTO ST/XT/PLUS XT.MINI TRIM CONTOUR XT, SPEEDI-TRIM, CONTOUR, CONTOUR 500/700.MINI TRIM AUTO/AUTO, MULTI TRIM 250D/250Dx/300D/30ODX. POWER TRIM (PNC 9648641), POWER TRIM 500/700 (PNC 9648596/7) REVOLUTION 2000/2300/2500 AND TwIST AND EDGE Quantity: 1 piece Color: as picture shown