1-1/4" Post (part that goes up in the round tube) 1" axle hole. Post has 4-9/16" overall length 4-3/16" bottom of mounting pin hole and accepts the standard 15" tire that is found on most cutters (and our Amazon store) 10-7/8"" tall inside the "U" where the wheel rides 5-5/16" inside the "U" leg to the other side weighs 12 lbs