Usage Tips:[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. [Compatibles with] The 25mm drive pulley adapter compatibles with Troy-Bilt TB230, TB240, TB260, TB280ES, MTD 12AGA25S011, 12AGA2M6766, 12AGA2MT766, Cub Cad et 12ABA2M5710, 12ABA2M5756, 12ABB22J709, Please check more in the description [High Quality] The product is made of bronze material, which greatly improves its reliability and durability. It has undergone multiple factory tests to ensure that it exceeds Part Number standards [Easy to Install] Comes with bolts and blade gaskets, easy to install. When installing, clean the shaft, remove the blade, remove the old pulley, and then install the pulley [Packaging Includes] 1 piece of lawn mower blade adapter with drive pulley, 1 piece of blade gasket, 1 piece of bolt. Pulley diameter: 2.8Inch; Inner diameter: 0.98Inch; Height: 2.85Inch Colour:As Shown Material:steel Package Contents: 1 * lawn mower blade adapter 1 * blade gasket 1 * bolt Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.