Fits 1" Square Harrow Axle(1) 7-7/16" Tall Rib Spool with Both Caps and Bolts and NutsFor Grease Type Harrow Bearins - Fits Several Different Type of BrandsCaps are 5-1/4" Long, Center to Center on the Holes is About 3-1/8"(2) 1/2" x 5-1/2" Long with Nuts with NylonWe Carry a Full Line of Harrow Parts, Fit You Don't Find What You Are Looking For, Give Our Parts Department a Call at (478) 237-5848!