"Step-on lock secures caster wheel and locks swivel in position for optimum scaffold safety. Hard rubber tire is bonded to cast steel wheel. Zinc-plated, 500-Lb. capacity caster has Zerk fittings for easy greasing. Lock adjusts for wear. 1 3/8in. diameter stem is 4in. long. Plate is 9in. high. Capacity (lbs.): 500, Wheel Size (in.): 10 x 1 3/4, Wheel Type: Swivel, double brake, Material: Hard rubber, Finish Type: Zinc plated, Post (in.): 1 3/8 x 4, Includes (qty.): 1 Stem: 1 3/8in. x 4in. length Plate Height: 9in."
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