Pack comes with two swivel with brakes and two fixed base castors. blue elastic rubber tyre with black plastic centre. Durable and sturdy wheel with good damping properties. Bright Zinc Plated Castor which meets with European Standards. The Standard Duty Range of castors take loads from 70kgs upto 350kg with wheel diameters 100mm upto 200mm. Zinc Plated Castors are most commonly found in Material Handling, Retail and Display Environments.