This 160mm extra heavy-duty castor is made of a pressed steel zinc plated, housing a polyurethane wheel mounted on an aluminium centre. This caster wheel runs on ball journal bearings, making the heavier loads easier to move. The foot operated wheel brake simultaneously brakes both the swivel castor head and the wheel. These castors are suitable for a range of heavy duty applications, carrying 700kgs each caster wheel, overall height 200mm 4 x M10 Bolt Fixing Plate. Combine 4 of these to carry over 2 tonnes castors.