The base of the PACKOUT™ Modular Storage System is the PACKOUT™ Rolling Tool Box. 9” all-terrain wheels allow the Rolling Tool Box to easily roll over a variety of rough surfaces, and a metal through-axle secures the wheels providing a stronger connection and longer life in jobsite conditions. An industrial-grade extension handle is designed to support box loads up to 113kgs, and its wide handle produces a more comfortable grip during transportation. In addition, metal reinforced corners provide ultimate durability.