The Herm. Sprenger Micro-Plus Prong Dog Training Collar with Center-Plate & Assembly Chain with Swivel is the perfect solution for training smaller dog breeds. Made from high-quality stainless steel, this collar features a 1.5mm wire gauge and a center-plate assembly chain with a swivel for added flexibility and comfort. Designed to fit neck measurements up to 10 inches, this collar ensures a secure and effective training experience without the need for additional prongs.