Metabo 628429000 Replacement Spool With Thread for compatible Metabo cordless grass trimmers and garden tools including FSD 36-18 LTX BL 40, FSB 36-18 LTX BL 40, RTD 18 LTX BL 30 and MA-FS 40 models. This replacement trimmer spool is supplied with cutting thread and is designed to restore reliable cutting performance when the original spool is worn, empty or damaged. Manufactured to the correct Metabo specifications for accurate fit and dependable operation.