These 125mm extra heavy duty braked castors is made of a heavy duty pressed steel zinc plated, housing a 5 nylon wheel. This nylon castor wheel runs on ball journal bearings, making the heavier loads easier to move. Load capacity per braked castor is 700kgs. The foot operated caster wheel brake simultaneously brakes both the swivel castor head and the wheel. These industrial braked nylon castors are suitable for a range of heavy duty applications. Overall height 164mm, 4 x M10 bolt fixing plate for ease of attachment.