... specifications:1.Caster materials: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 12531.And they ... industrial machine, medical facility, furniture, trolley, shopping cart, forklift, scaffold, shelf, etc.Welcome to our company to know more about ...