*Includes: (3) – Spool Cover # WA6531 *Replaces Part # WA6531, 50006531 *No tools needed to install *Snaps in place over spool line *Genuine Worx Replacement Part *Replacement spool cap cover for series WG150s, WG152, WG151s, WG155s, WG160, WG165, WG166, WG167 cordless trimmers. The Worx replacement spool cap cover is for series WG150s, WG152, WG151s, WG155s, WG160, WG165, WG166, WG167 cordless trimmers. This cap protects the spool line and keeps it in place on your trimmer. No tools are required to install it. Simply snap it on over the spool.