About this item Adjustable Size The perimeter of the dog training collar can be adjusted to 23.6 inches, suitable for small medium large dogs. You can add or remove individual chains on the dog pinch collar to fit your dog’s neck as need High-Strength Material Aheasoun prong collar is made of high strength chrome plated stainless steel recommended by trainers. Prong collars for dogs have a silver coating for links that can provide a stable usage period for your dogs Safety And Effective Aheasoun dog training collar place even pressure on the neck sides and not on the trachea, prong ends of the dog choke collar are protected by rubber tips that can prevent harms to your dogs neck Easy To Use The training collar for dogs can easy to put on and take off in a second. Prong collars for dogs have a strong D-ring that provides a more secure connection with leash. If the product is locked or knotted and cannot be used, please remove the rubber tips, loosen