6 inch Steel Rim 13/500x6 Turf Tread Tyre Low Speed Bearing- BWW Series Bearing Options:19mm Ball Bearing The 100mm diameter wheel is

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

12 mm Bearing Type: Roller Wheel Tread Material: Rubber Hub Material: Polypropylene

The MSP100/SF castor frame is a fixed plate type

The MHG150/P-HT castors are a heavy duty pressed steel bracket with a zinc passivate coating and a double bearing head race filled with high/low temp grease

6 inch Steel Rim 13/500x6 Turf Tread Tyre Low Speed Bearing- BWW Series Bearing Options:19mm Ball Bearing The 100mm diameter wheel isSpecifications Code: BWW150 135T Tyre Size: 13 500 x 6 Rim Size: 6 inch Load Per Wheel: 200kg Bearing Type: Ball Bearing Tyre Width: 127mm Tyre Diameter: 318mm Bore Diameter: 19. 05 , 25. 4mm Hub Width: 80mm