MODbox™ Components Easily Interconnect for a Customized Mobile Workstation, Built-in Side Rails, 10-Inch Solid Rubber Wheels, Telescoping Handle, Impact Resistant Polymers, IP65 Rated, 250-Pound (113.4 kg) Carrying Capacity, Lid Features V-groove Contoured for Pipe, Molded in Ruler, Steel Reinforced Lock Location for Cable or Padlock