80 mm deep steps with zarges safer step technology for fatigue free standing particularly large surface work platform with aluminium checker plate surface 400 mm x 400 mm practical aluminium storage tray for small items and tools with two handrails as standard for safe access optimum stability thanks to two high strength perlon straps for preventing splay high strength zarges quality flanged connection between tread and stile treads and stiles made from extruded aluminium s