1) diamond pattern ABS panel surrounded with halfmoon aluminum frame 2) PE mold inside for tools, adjustable inserts for the tools 3) 1 strong ABS handle with metal base, 2 latches with keyholes, hinges on the backside, 8 reinforced metal corners 4) size, big ,45×32×15cm mid case, 42×28×12cm small case,39×24×9cm or customized aluminum tool case, aluminum case, tool case, tool box for tool set. you will interest in other aluminum case ,as follows :