Say goodbye to trimmer line frustration. Husqvarnas RapidReplace trimmer head is a new accessory for your gas-powered string trimmer that streamlines and simplifies the trimmer line reloading process. Simply, align, load and twist the RapidReplace head no disassembly required. The RapidReplace holds up to 10% more trimmer line than Echo Speed-Feed 400. Includes adapters for universal compatibility with most gas-powered trimmers. Compatible with 065 - .105 trimmer line.