1.Diameter:30-50mm 2.Load capacity:15-40KG 3.PU,different ... :Plastic2.Loading capacity: 15 to 40kg per caster3.Wheel diameters: 30, 40,50mm4.Matching with various fittings ... products go through 5,000 brake test and load capacity test conforms to the caster standard EN ... industrial machine, medical facility, furniture, trolley, shopping cart, forklift, scaffold, shelf, etc.Welcome to our company to know ...