Specifications Spindle Usable Length: 4-1/4" Overall Spindle Length: 5-1/4" Takes The Standard 15" Tire 9-5/8" Tall Inside The "u" Where The Wheel Rides Width Between Forks: 5-1/2" Shaft Diameter: 1-1/4" Bolt Holes: 1" Weighs 12 Lbs.