Compatible with Black and Decker GH900 Type 1, GH900 Type 2, GH912 Type 1, GH912 Type 2, LST300 Type 1, LST300 Type 2, LST400 Type 1, LST400 Type 2, LST400-1 Type 2, LST420 Type 1 Compatible with Black and Decker LST522 Type 1, LST522 Type 2, LSTE520 Type 1, LSTE523 Type 1, LSTE525 Type 1, MTE912-AR Type 1, MTE912-B2 Type 1, MTE912-B2C Type 1, MTE912-B3 Type 1, MTE912-BR Type 1 Replacement Black Decker Blades Part Number:90559116 Durability:Black & Decker cut-off blade is designed for long-lasting performance, made from high-quality materials that ensure it withstands heavy-duty tasks and provides a longer lifespan. Ease of Use: Engineered for user-friendly operation, Black & Decker cut-off blade is easy to install and replace, minimizing downtime during projects. Safety Features: The blade is designed with safety in mind, offering a secure and stable cutting experience when used correctly with the appropriate safety precautions. Thten 90559116 Trimmer Cut-Off Blade Knife Cutter Compatible with Black and Decker GH900,GH912,LST300,LST400,LST420,LST522,LSTE520,LSTE523,LSTE525 String Trimmer 4 Pack