Features: The 25mm drive pulley adapter bolt features innovative pulley technology that reduces friction during mowing, enhancing cutting efficiency. Constructed from aluminum alloy and reinforced plastic, this blade adapter ensures long lastingly performances with precise alignment for smooth belt operations. Ideal for homeowners and landscapers maintaining yard with compatible riding mowers requiring reliable blade replacements for consistent grass trimming. Perfect for maintaining residential lawns, park, or commercial landscape using Yard Man and similar tractor models needing efficient pulley driven blade systems. This lawn mower blade adapter's precise engineered design minimizes motor strain during operations while delivering professional cutting accuracy across varied terrains. Specifications: Product Type: Lawn Mower Accessories Component:Metal Size:Approx.8.2x7cm/3.22x2.75inch Part Number: 687-02528 Package Includes: 1 Set 25mm Drive Pulley Adapter Bolt note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.