Dewalt tstak tool boxes dewalt dwst1 70703 this tool box ii from dewalt is a tough durable tool case made from 3mm polypropylene plastic its solid metal hinges and heavy duty metal latches make it highly robust while its bi material handles improve user comfort another feature is the engineered plastic side clips to enable numerous boxes to be stacked and held securely together for transport a pre cut foam inlay can be customised for all tools the tstak interlocking storage system allow