Great selection of U boat and stocking carts from trusted manufacturers Dutro®, PVIFS®, NAI®, Little Giant®, Nexel®. and Technibilt®. Make receiving and stocking your merchandise simple and easy with these functional stocking and U boat trucks. Choose from models with four or six wheels, and wheel sizes from 5" to 8". Choose between U boat utility carts that have one handle or those that have two.