World renowned as the professionals choice , the HERM SPRENGER line of German Steel ROUNDED TIP PINCH martingale design collars. This is a "Ultra-Plus" collar with a center plate to allow for "constant impact" and "optimized communication with the dog". This collar produces an even pressured safe pinch for the most effective corrective dog training collar available. "H" model with the exclusive herm. sprenger scissor snap is a unique, quick release lock that can be operated using only one hand. it's safe, practical and very easy to use.
Dogs should never be left alone with prong collars. When properly fitted and used correctly, prong collars are very effective and safe training tools. The collar should be worn snug on the neck and should be fit just under the jaw, right behind the ears.
Sizing: When measuring your dog, measure around the neck behind the ears.