Product Name : 200mm WheelDIAMETER(mm): 200mmTYRE WIDTH(mm): 50BOSS WIDTH(mm): 63AXLE DIAMETER: 20mmBEARING TYPE: Ball BearingLOAD CAPACITY(kg): 400/300WHEEL CODE: PU8071-M20 The PU8071-M20 by Richmond is a 200mm diameter polyurethane tyred nylon whe