This product is the combination of a disassembled Herm Sprenger prong collar quick-release Black SS martingale training collar with the traditional fastener plate replaced by a custom (not Herm Sprenger) easy-to-use quick snap buckle. The enhanced buckle greatly improves the experience for both you and your dog. Please measure your dog’s neck before selecting the correct size to purchase. A pinch collar (also called a prong collar) is a type of metal chain placed around your dogs neck. Many dog trainers claim that the pinch collar is the most effective collar type tool in training your dog and getting the desired behavior, and is actually safer than many traditional collars that put sustained higher pressure on the dogs neck and throat. Positive punishment is a technique used by dog trainers and owners when altering the behavior of their dog. This is what positive punishment does. In psychology, when a negative consequence follows a certain beh