Strong tubular steel frame, with steel mesh treads, and sprung retractable 80mm diameter rubber tyred swivel castors.Castors provide easy mobility when unloaded, but retract when body weight is applied, to anchor firmly in place on rubber feet.Platform W x D: 400 x 300mm.Tread W x D: 400 x 150mm.Capacity:150kg.3 year guarantee.Made in UK.Handrail options on 2 tread version.