**Husqvarna branded handheld products and accessories are only available to members who meet certain program requirements. Please contact Husqvarna on how to become a certified dealer and carry the Husqvarna line. The trimmer spool has 2 key slots to lock the trimmer line in and keep it from unwrapping while putting the cap back on the trimmer head. The spool comes pre-wound with .095 In. Titanium Force trimmer line.