This swivel frame castor (stock code S4032B) uses a nylon 100mm wheel. The maximum capacity of this castor is 200kg. The swivel castor wheel is fitted with plain bearings and is baseplate mount. This castor is mounted with a brake, but if you need it without a brake, search for S4032. The swivel frame design of this castor permits the load to be steered. The outside diameter of the wheel is 100mm, the wheel overall width is 35mm and can be purchased separately (NY401).