The Kawasaki 59075-2018 Trimmer Bump & Feed Cutting Head Assembly helps provide reliable and controlled line feeding for compatible Kawasaki trimmers. It works by rotating the cutting line and using a bump-and-feed mechanism to release additional line when the head is tapped against the ground, helping maintain an effective cutting length during operation. Made to replace a worn, dama... https://www.wholetoolbox.com/kawasaki-59075-2018-trimmer-bump-feed-cutting-head-assembly/59075-2018.html