These 160mm extra heavy duty fixed castors are able to carry loads of 700kgs each , making them in sets of four 2 tonne castors! Made of a heavy duty pressed steel zinc plated, housing a 160mm ( 6 ) polyurethane wheel mounted on a strong cast iron centre. This fixed castor wheel runs on ball journal bearings, making the heavier loads easier to move. These fixed heavy duty castors are suitable for a range of heavy duty and industrial applications. 160mm Heavy Duty Fixed Castors Polyurethane Wheel 700kg