The HART 2-pack of .080” line and spool is the perfect way to conveniently reload line into your auto-feed trimmer. Thanks to this pre-spooled line you can get back to maintaining the garden of your dreams in no time at all. This .080” line comes already pre-loaded on to a spool so when it comes time to reload your trimmer, simply pop the cap off of the trimmer head, remove the old spool and load the new pre-loaded spool while feeding the line through the hole in the head. Then just pop the cap back onto the trimmer head and you are ready to go! This trimmer line is designed to be durable and power through the grass and weeds found in and around your garden and lawn. This line and spool is compatible with all HART Auto-Feed string trimmers including the HART 20V Hybrid String Trimmer and the HART 40V 12-inch String Trimmer. Please remember to read the manual for your trimmer to see which sized line is recommended for your trimmer.