... rubber caster with steel core,roller bearing,fixed caster 1.size:3"-8" 2. ... Industrial rubber caster with steel core,roller bearing,fixed caster Item numberplate finishwheel diameter(mm)wheel ... , size of diameter and Attachment can be customized«»Fixed,With or Without Brake. »Can have Screw,stem ... material: 2.size: 3.color: 4.mounting ways(fixed,plate,thread,bolt hole) 5.quantity: 6.surface finishing ...