TYPICAL APPLICATIONS: Dollies, Waste disposal trucks, Warehouse trucks, Floor Trucks, Shop carts. FEATURES: Top Plate & Yoke Base: Cold formed from 1/4” steel plate. Yoke base is notched for factory or field-installable *-position swivel lock. Swivel Section: Heat treated, smooth formed, hardened, double ball bearing raceways minimize ball indentation and wear. Fork Legs: 1/4” steel, formed to increase strength and welded to yoke base. King Pin: 5/8” diameter orbitally spun steel rivet. Axle: 1/2” diameter hollow axle complete with lock nut with straight roller and ball bearings. Axle is solid with Plain Bore, Delrin and Oilex bearings. Wheel seals: Nylon seal retaining/thrust washers. Lubrication: Zerk fitting in swivel section and in recessed head of hollow axle on straight roller and ball bearing wheels. Finish: Rigs zinc plated to resist corrosion. NSF Listed for food service industry. Alternate or custom caster configurations available.