Electric PTO Clutch Fitment: Compatible with Gravely ZT HD44, ZT HD48, ZT HD52, ZT HD60, Pro-Turn Z48, Pro-Turn Z52, Pro-Turn Z60, Ariens Apex 48, Apex 52, and Apex 60 zero-turn mowers. This PTO clutch ensures a precise fit for reliable blade engagement PTO Clutch Replacement Part Numbers: 59118500, 05118900, 53797600. Specifications: Inner Diameter (ID): 1 inch, Outer Diameter (OD): 7.16 inches. Directly replaces OEM components for seamless integration High Performance: Utilizes advanced power transmission technology to ensure smooth engagement between the lawn mower blades and the engine. Maximizes power transmission efficiency, reducing energy loss and improving cutting consistency Reliable Quality: Constructed from high-grade metal materials that meet or exceed OEM standards. The electric PTO clutch restores safe, reliable, and efficient blade control while protecting the transmission system and engine, ensuring long-term operation 1-Year Assistance: Contact our team anytime for help with product questions or concerns ASIN B0H4LBWVC2 Item Weight 12.43 pounds Manufacturer REVOTUNE Item model number AA-CHUB005-9S Product Dimensions 8.07 x 7.87 x 4.72 inches