Heavy Duty PU on Aluminum Rigid Casters Heavy duty PU on aluminum rigid casters are very popular products in the caster market in any country. These heavy duty casters are widely and frequently used in industry, so the quality is very important. They have rigid casters, swivel casters, side brake casters and total brake casters, and the single wheels are hot-sale products. These caster wheels are assembled from aluminum core polurethaene wheels, with double ball bearings and heavy duty brackets. The raw materials used in our casters are very good, and the surface PU is synthesized by a good synthesis technology. As we know, casters bearings and brackets are the basic conditions that must be considered and referenced for loading capacity. So we purchase high-quality bearings and continuously improve the bracket. Our casters are your good choice, and let's make moving easy together!…