... Fittings : Top plate swivel,screw thread,bolt hole,steel stem Wheel bearings : : Single bearing Load capacity :70kg,90kg,100kg Housing: ... New PA injection Plated:Zinc/Chrome Function Wheel Material Item No. Wheel Diameter Tire Width Plate Size Hole Size ... caster,stretcher caster, healthcare bed casters, universal tables castor wheel, worktable castor,nylon yoke castor, plastic brake caster, plastic ...