3/4,3/4,Amazon.com: HD Switch -4 Pack- Spring Loaded OEM Upgrade Bearing Seal Set fits Toro Exmark 103-0063, 1-633580 : Appliances,Rotary Corp Compatible with Male Rod End Exmark 1-633029 14815 (5/8-inches - 18),Amazon.com: HD Switch -4 Pack- Spring Loaded OEM Upgrade Bearing Seal Set fits Toro Exmark 103-0063, 1-633580 : Appliances