The new Super Cube trailer design is based on the same heavy-duty chassis and running gear already fitted to the standard Field Master trailers, including high-speed commercial axles with air and hydraulic load-sensing brakes, flotation 560/60/22.5 tyres and the latest heavy-duty suspension.This heavy-duty spring suspension system is 4in wide and 2in thick, compared with the previous 3in wide and 2in thick version.