Profile: Southeast Caster Co. specializes in offerign caster products. Colson™ continous/corner bumpers are grey corner bumpers with matching strip bumpers provide that provide protection to the full perimeter of equipment. Strip bumpers are made with flat steel inserts for permanent attachment. Inserts in strip bumpers are not predrilled. They can be easily cut to size with a hacksaw and drilled as needed. Insert in corner bumper model 6926 is predrilled for mounting. Corner bumper models 6905 and 6906 have no inserts. Colson™ 3 series casters are zinc plated. It features a full double ball hardened raceways, 3/8 inches hollow axle with lock nut, permanent rivet king pin construction, reinforcing washer on upper & lower raceway, grease holes with wheel bearing.