
The Black+Decker String Trimmer Auto Feed System Replacement Spool eases the work of hand winding. It features a 0.065" diameter line and utilizes centrifugal force to automatically feed the cutting string while eliminating bumps and hitches. This product comes with an ample supply that will last you a while. It has a multi-purpose use by being compatible with a variety of string trimmers. The item is ready to use, so there is no assembly needed other than attaching it. Compatible with BESTA510 BESTA512 BEASE620 CST1000 CST1200 CST2000 GH400 GH500 GH600 GH610 GH900 GH912 LST120 LST136 LST140 LST201 LST220 LST300 LST400 LST420 LST522 LST1018 LSTE522 LSTE523 LSTE525 NST1018 NST1024 NST1118 NST1810 NST2018 NST2118 ST7000 ST7200 ST7700 ST7701 ST8600 ST9000.