The ECHO 99944200418 Trimmer Blade Conversion Kit converts compatible string trimmers for use with a brush cutting blade, expanding the equipment's cutting capabilities. Designed as a replacement conversion kit, it fits select ECHO SRM trimmers and includes the required mounting hardware, harness, and barrier bar for blade installation. It works by replacing the trimmer head with a co... https://www.wholetoolbox.com/echo-99944200418-trimmer-blade-conversion-kit