The RedMax RapidReplace™ trimmer head, the latest generation of trimmer heads, provides an easy-to-use solution that will enhance productivity and reduce line reloading frustrations. Quickly reload the Rapid Replace trimmer head with trimmer line without dissembling. Simply align, feed and twist and the user will be back to trimming in no time! The RapidReplace™ trimmer head is a semi-automatic, bump feed head compatible with .065" - .105" trimmer line. The head holds up to 22' of .095" trimmer line and fits all RedMax straight and curved shaft trimmers. The universal kit also includes all hardware needed to fit most leading competitive products.