This 125mm medium duty pressed steel swivel bolt hole braked castor with a 12mm bolt hole fitting and an anti static black rubber wheel is suitable for spark free environments where it is important to have electrically conductive wheels, such as in Clean rooms. Anti static castors with a brake are electrically conductive and prevent the build up of static. The useful foot operated brake simultaneously brakes both the swivel head and the wheel 125mm Swivel Bolt Hole Braked Castor Anti Static Rubber Wheel