Features:

-light weight: the body of the base cart is made of aero grade aluminum alloy.

-compact: the compact size of base cart can be easily loaded in the trunk of your vehicle even if it
  is a compact size sedan.

-tool free installation: once you finish the installation of base cart, the other units can be easily
  installed with hand screw, it is super convenient for you to do the vehicle loading and unloading.

-2 fixed pneumatic casters and 2 pneumatic swivel casters provide high payloads up to 440 lbs
  (200 kgs), and the brake mechanism on the swivel casters allows you to hold the position of the
  cart.

-9-1/2” high clearance allows you to pull the cart all terrain.

-the base cart can be used as heavy-duty moving cart.

-the base cart frame is made of European standard aluminum linear rail, which allows to you DIY
  endless expanding using.