1.Diameter:160~200mm 2.Load capacity:500~600kg 3.Mold on rubber caster,plain bearing 4.Good quality. Reasonable price. 1.Product specifications:1.Wheel diameter: 160mm, 200mm 2.Load capacity: 500 up to 600kg per caster 3.Caster material: Plain bearing mold on rubber wheel and hollow stem heavy duty fork 4.Chrome, zinc or nickel plating available 5.Pressed steel housing,zinc plated,double ballrace ...