1,rack case,audio case,mixer case,dj case 2,Aluminum frame+plywood ... wheels 4,Welcome to OEM & ODM case Aluminum rack case,audio case,mixer case,light case,speaker case,DJ case. Product ... ,ChinaPort Origin Ningbo ,or ShanghaiMinimum Order 10 PiecesSupply Capacity 1000 pieces/monthPacking 1pc/bubble bag,then put into a master ... or make to order Product Pictures Display: 16U professional audio rack case