[Fitment]: Replacement for Black & Decker GH3000, GH3000R, LST540, LST540B. [Package Includes]: 3 x 20-foot 0.08-inch diameter trimmer line. [Material]: SF-080 line string trimmer replacement spool adopts ABS spool and durable polyamide nylon thread, which is flexible and has a long service life. [Size]: Line length 20ft, diameter 0.080 inch. [Tips]: Please wear goggles and long pants when using this product to avoid damage caused by spillage lines. This product is only suitable for young grasses, for strong weeds, use other tools for pruning. Fitment: 
Replacement for Black & Decker GH3000, GH3000R, LST540, LST540B.