... iron caster) . Every kind include stationary type, flexible type, screw type,brake type.If there is no types you are ... ,we can process products according to your request. Light series caster wheelSize: 2inch-6inchType: screw caster-activity typeMaterial: ... rubber, nylon, polyurethane and so on.Characteristics: Wear-resisting, small noise, corrosion resistance, flexible ...