This leaf spring centering pin from ORV Suspension has a 5/16 inch shaft diameter and is 2 inches long. Are you re-arching, modifying or restoring your leaf springs? Don't reuse the old centering pins when reassembling your leaf springs! Over time rust and stress fatigue the original hardware leaving it susceptible to failures. The last thing you want is for your leaves to come apart when you are headed down the road.