[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 full description. [High Quality] The product is made of high-quality bronze material, which improves reliability and durability. It has undergone multiple factory tests to ensure it meets industry standards. [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. [Packaging Includes] 1 x lawn mower blade adapter with drive pulley, 1 x blade gasket, 1 x bolt. Pulley diameter: 2.8 inches; Inner diameter: 0.98 inches; Height: 2.85 inches Color: As shown Material: Steel Package Contents: 1 x Lawn mower blade adapter 1 x Blade gasket 1 x Bolt Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement allowance is +/- 1-3 cm.