Align, feed and twist. That's all it takes to quickly reload line with the Husqvarna rapid replace trimmer head. This semi-automatic, bump-feed head takes seconds to restring and can hold up to 18 ft of 0.08 in trimmer line. That's 10% more trimmer line capacity than the leading competitor's easy load head. When the trimmer head is empty, simply align the eyelets, feed the rapid replace head with line and twist. Say goodbye to reloading frustrations from disassembling and get back to trimming in no time with rapid replace. This trimmer head fits Husqvarna dual-direction battery trimmers (220il and 320il) and comes pre-wound with 22 ft of 0.08 in line.