200mm extra heavy duty lockable castors made of heavy-duty pressed steel zinc. Housed in a polyurethane wheel and mounted on an aluminium centre for added strength. This 200mm polyurethane castor 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 lockable castors are suitable for a range of heavy duty applications, carrying loads 800kg per caster wheel. Overall height 240mm, 4 x M10 Bolt Fixing Plate for easy attachment.