... rubber caster with steel core,roller bearing,fixed caster 1.size:3"-8" 2.material:rubber,steel 3.roller bearings Industrial rubber caster with steel core,roller bearing,fixed caster ... ,Medium duty casters,Heavy duty casters,Garbage disposal rubber caster,Scaffording casters etc. For custom products, please ... suitable wheels and casters. Industrial rubber caster with steel core,roller bearing,fixed ...