3 PACK TRIMMER SPOOLS AF-100-3ZP Type: Parts & Accessories Features: Black & Decker replacement spool system eliminates time spent hand-winding string trimmers Compatible with most Black & Decker string trimmers; 30-Feet replacement line is factory wound for a superior feed The Black & Decker spool utilizes centrifugal force to feed the trimmer line as it is needed Includes a 0.065-Inch diameter line