Seller: larrygs71 ✉️ (4,824) 100%, Location: Muskegon, Michigan, US, Ships to: US, CA, Item: 203779521672 PAIR RICHARDS WILCOX DOOR TROLLEY WHEEL ASSEMBLY 3" DIA BARN FREE SHIP. pair of richards wilcox trolley assemblies. wheels are 3" diameter. 4" from hook center to wheel center. these are rusty from storage but have not been used.