caster 1) Wheel diameter: 50+80mm 2) Material: PU (Polyurethane) 3) Load capacity per 1 piece: 30-50kg casterWe can supply a variety of furniture caster wheels.»Color, size of diameter and Attachment can be customized«»With or Without Brake.»Can have Screw,stem, plate.Our Standard feactures:NameMaterialWheel DiameterTotal HeightTotal widthLoad CapacityHELENPU50mm66.5mm29mm30kg80mm102mm45mm50kg* ...