Cart caster,caster wheel,trolley wheel 1) Material: PU caster with pp core 2) Diameter:100mm,125mm Cart caster,caster wheel,trolley wheel1) Material: PU caster with pp core2) Diameter:100mm,125mm3) Wheel width: 30mm4) Bearing type: double ball bearing5) Load capacity:60kg,80kg5) Can be widely used in shopping trolley.