[Replacement Part Number] This pulley-equipped lawn mower blade adapter serves as a replacement for the 687-02528 adapter blade, 710-1044 hex bolt, and 736-0524B blade bell support washer. [Compatible With] The 25mm drive pulley adapter is compatible with Troy-Bilt TB230, TB240, TB260, TB280ES, MTD 12AGA25S011, 12AGA2M6766, 12AGA2MT766, Cub Cadet 12ABA2M5710, 12ABA2M5756, 12ABB22J709. Please check compatibility in the product description. [High Quality] The product is made of high-quality bronze material, which enhances reliability and durability. It has undergone multiple factory tests to ensure it meets or exceeds original part specifications. [Easy to Install] Includes bolts and blade gaskets for easy installation. To install, clean the shaft, remove the blade, remove the old pulley, then install the new pulley. [Package Includes] 1 x lawn mower blade adapter with drive pulley, 1 x blade gasket, 1 x bolt. Pulley diameter: 2.8 inch; Inner diameter: 0.98 inch; Height: 2.85 inch. Color: As shown. Material: Steel. Note: Light reflection and different displays may cause slight color variations between the item and the image. Measurement may vary by +/- 1-3 cm.