The Dog-Thing by Talents10 – Dog Training Prong Collar is a high-quality metal collar that is perfect for training your dog. The collar features 3.2mm thick steel interlocking links with an attractive and durable chrome finish. The collar comes in multiple sizes and fits dogs with a neck measurement up to 15 inches. The collar provides a gentle pinch sensation and is easy to adjust. The Dog-Thing by Talents10 – Dog Training Prong Collar is perfect for training your dog and controlling large, strong dogs.