ZGU1097 Features: * General duty caster * Steel wheel * Can withstand temperature extremes * For infrequently moved objects on rough wood and concrete floors * Recommended for infrequently moved objects on rough wood and concrete floors * Load capacity: 250 lbs (3"), 500 lbs (4") Construction: * Rigid construction Dimensions: * 3" Dimensions: 3.88" H x 3" W x 4.88" D * 4" Dimensions: 5" H x 4" W x 6.13" D