Double-walled shells of impact-resistant and unbreakable polyethylene, highly temperature and chemical resistant, 80 mm deep bottom shell with dividing walls for flexible interior division according to individual needs, 2 removable boards with innovative, patented FLEXIPOUCH pockets for storing tools and small parts, spacious two-part document compartment, metal cover holder stable on both sides, 2 large rollers (ø 98 mm!) with ball bearings for more stability and robustness, 4 rubber bottom-sliders and appropriate recesses on the case cover make the case securely stackable. The telescopic handle is discretely integrated into the bottom shell and does not get in the way during normal case transport. The handle can be extended to an ergonomically comfortable 115 cm. Handle with soft rubber insert and abutment springs, 2 stable key locks.