A castor is a small wheel-like device that is attached to the legs or base of furniture items to make transportation easier. Often made from durable materials like metal or plastic, castors are common in furniture pieces like chairs, tables, and cabinets. They work by providing a smooth and easy way to move furniture around without having to lift it up or drag it across the floor.

Another great feature of castors is their versatility. Castors come in a variety of sizes and styles, with different levels of weight capacity and function. For example, some castors are designed for low-weight furniture pieces like chairs or small tables, while others are made for heavy-duty industrial equipment. Some castors can swivel 360 degrees, allowing for greater maneuverability, while others are designed for straight-line movement.