ECHO Blade Conversion Kit ECHO blade conversion kits provide greater versatility for your ECHO SRM trimmer. From lawn trimming to cutting through dense weeds and underbrush, the blade conversion kits provide convenience and unit flexibility. Features A harness, mounting hardware, and a barrier bar are included for a safe transition from a nylon line head to a brush blade For flexibility, you can use the kit with a different or existing brush blade Comes with a standard 20mm size arbor Compatible with the SRM-225, SRM-225i, SRM-266, SRM-280, SRM-280S, SRM-280T, SRM-2620T, and SRM-2620* (*When used with a 20mm blade) Includes 1 - Brushcutter Harness 1 - Shield 2 - Barrier Bars 2 - Adapters 2 - Fixed Plates 1 - 8-Tooth Grass & Weed Blade (Only included in Part Number 99944200422)