These wheels are made to outperform and outlast the competition. CASTER SPECIFICATION: Industrial caster total height: 4-1/8". Top plate size: 3-5/8"x 2-3/8", plate hole spaceing: 2-3/4" x 1-3/4". CASTER FEATURE: The Steel casters contains two ball bearings, which can rotate freely and is shock resistant.
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