These wooden casters/wheels are ideal for older restorations or reproductions where a rubber or plastic caster would look out of place.The wooden wheels are cut from durable hardwood and measure 1 5/8" diameter x 3/4" wide.Stem mount design allows the casters to swivel inside the metal sleeve.Stem measures 1-1/2" long x 3/8" diameter.Metal socket/sleeve are zinc plated steel, inside diameter of sleeve is 5/16".