The ECHO 8 in. 8-Tooth Grass Blade and 20mm Blade Kit offers more versatility with your ECHO SRM trimmer. From trimming the lawn to cutting through dense weeds and underbrush, ECHO's blade conversion kit delivers convenience and unit flexibility.. For questions about service and repair, please call Echo at 1-800-432-ECHO or reference the Service & Repair document. 8 teeth per inch blade. Ideal for professionals and homeowners. <a href="https://www.homedepot.com/b/Outdoors-Outdoor-Power-Equipment-Chainsaws/ECHO/N-5yc1vZbxamZ36i" target="_blank" style="color:#F96302;">Shop Echo Gas Chainsaws Here</a>. Note: product may vary by store. Note: product may vary by store. Also compatible with older ECHO models: SRM-265, SRM-265S, SRM-265T, SRM-266T and SRM-266S. Compatible with ECHO SRM models: SRM-225, SRM-225i, SRM-266, SRM-280, SRM-280S, SRM-280T, SRM-2620 and SRM-2620T. Includes mounting hardware, brushcutter harness, barrier bars and 8" 8-tooth brush blade