4 inch Steel Rim 300x4 Diamond Tread Tyre High Speed Sealed Bearing- RW Series Bearing Options:20mm Sealed Bearing The 100mm diameter wheel is

The 100mm diameter wheel is a monolithic compound & has a plain bore with a stainless steel axle bush (no bearing)

The MSN80/SP-TB castor frame is a swivel plate type

The MSU80/SP castor frame is a swivel plate type

providing a hard wearing combination

The LKB100/H castor is a heavy industrial castor with a steel construction and double row bearing bearings and seal

4 inch Steel Rim 300x4 Diamond Tread Tyre High Speed Sealed Bearing- RW Series Bearing Options:20mm Sealed Bearing The 100mm diameter wheel isSpecifications Code: RW100 300D Tyre Size: 300 x 4 Rim Size: 4 inch Load Per Wheel: 132kg Bearing Type: Sealed Ball Bearing Tyre Width: 73mm Tyre Diameter: 250mm Bore Diameter: 20 , 25mm Hub Width: 80mm