These 4-Pack 3.5" Plate Casters with Thermoplastic Rubber Wheels are designed to provide a durable and versatile solution for a wide range of applications. With a load capacity of 1200 pounds, these casters are suitable for use in warehouses, factories, and kitchens. They are made from high-quality thermoplastic rubber that provides superior floor protection and a quieter operation. The casters come in a pack of 4 and are available in both swivel and rigid options, with a top plate mounting type. The rigid option includes 4 casters that provide super stability, durability, and hard-wearing.