Classic aluminum box, with strong practical hooks, aluminum alloy box with four corners, to avoid collision damage and make the service life of the box longer, aviation grade thick aluminum alloy pull rod, universal mute wheel, 360 degrees rotation, ABS+PC material, pressure resistance, wear resistance, strong toughness without deformation. TSA customs universal password lock, 20 inch international standard boarding box, can be carried on board. 22 ", 24 "short trip, 26", 29 "long trip. 9 colors for you to choose from. Different specifications, different prices, please contact customer service before placing an order