... ,75mm Wheel materials : Nylon Fittings :Rigid,swivel Wheel bearings : bush bearing. Load capacity : 40kg,60kg,80kg Housing: Made of pressed steel, double ... 53X37 80 80 Frig caster,icebox caster,refrigeratory castor,high heavy loading,plate thickness is 3mm,fork thicknessis 2mm. Platform trolley ...