The vintage horse harness line spreader is a piece of equestrian equipment made of leather, designed to be attached to the horse's harness to help distribute and separate the lines for horse driving. This item is also known as a rein spreader or separator, providing a safe and secure way to attach and control the horse while driving. With its durable leather material and timeless design, this vintage horse harness line spreader is a practical and stylish addition to any equestrian's collection.