Compatible with Mountfield R25M, not compatible with others. Model number is 135061406/0, please check carefully. Outer circumference 991mm, width 13mm, thickness 8mm, to ensure smooth operation of the drive system. Made of wear-resistant rubber material, with elasticity and tensile resistance, to extend service life. Ensure stable power transmission, reduce energy loss, and improve the overall working efficiency of the mower., Manufacturer: Briny River