... size:3"-5" 3.floor protection,non-marking casters Medical appliance castersTPR caster with PP core,ball ... ,one bolt hole. Item numberplated finishwheel diameter(mm)wheel width(mm) overall height(mm)bolt size(mm) ... Main productsIndustrial casters,Shopping cart casters,Furniture casters,Institutional casters,Medium duty casters,Heavy duty casters,Garbage disposal rubber caster,Scaffording casters etc. ...