This 4" swivel caster is for use with SpecialMade Cart Models 1777453, FG335588, FG342488, FG345700, FG409100, FG409200, FG409300, FG409400 FG409500, FG409600, FG440120, FG9T6800, FG9T7200, FG9T7300, FG9T7400, FG9T7600, FG9T7700, FG9T7800, FG9T9200, FG9T9400 and FG9T9500.Model #: 3424-L6 Swivel Color: Gray Wheel Diameter: 4" 658852