This 4-pack of plate casters is a heavy-duty and durable solution for moving heavy loads with ease. With a total weight capacity of 3600 pounds, this set includes two swivel casters with brakes and two rigid casters for easy maneuverability and secure placement. The caster wheels are made of phenolic material and are 4 inches in diameter and 2 inches in width, providing superior floor protection and quieter operation. The top plate measures 4 inches by 4.5 inches and has a mounting over height of 5-5/8 inches. These casters also feature roller bearings with a hardened raceway for extra strength and easy cleaning. With its hassle-free return policy, you can be confident in your purchase of these high-quality plate casters.