Rubbermaid® TradeMaster® Mobile Workcenter. $1,019.00 - $1,324.00. Rubbermaid Mobile Maintenance Carts These maintenance carts will not rust, dent, chip or peel. They maneuver smoothly on 5" non-marking, polyurethane casters, 2 fixed and 2 swivel with b more. See all 2 items in product family.