J-tec Industries, Inc. CarryMore® TQDB-40, a Dual Quad-Steer model that weighs 900 lbs. and can carry up to 4000 lbs. at 5 mph. It measures 48″ wide x 138″ long (including tongue). This big mother cart can turn 180° in a 21-foot space. It can hold up to two daughter carts each measuring 40″ x 50″ or one cart measuring 97″ x 50″.