The Tool Case is built to carry heavier loads and withstand frequent shipping. Rib design to absorb shock and provide superior protection,Pull button, spring loaded handle, a heavy duty tongue and groove frame,and a rugged chemical resistant molded rib shell. The tool case is built to stand up to even the most demanding users and environments. Product Name: HT-TB50C Tool Box Material: Rotomolded Polyethylene LLDPE Product Use: Tool Transportation, Storage And Protection. Process: Disposable Rotational Molding Process