Black UDG CD Trolley 256 Set, The UDG CD Trolley 256 Black Set comes with 2 CD Wallets 128 in the same color. It is geared with a robust set of roller blade wheels and a sturdy aluminum frame. One of the best advantages of using the CD Trolley 256 Set that it fits in an airplane overhead compartment. The CD Trolley 256 Set is available is Black, Gold/Bronze and Army Desert.