Strimm Metal Dog Chain Collar Slip Martingale Training Choker with Nylon Webbing Woven Size: 8mm X 65cm (8mm diameter, about 25inch length, weight about 180g), It can withstand up to 100 kg of pulling force Good quality, Unlike plain chain collar, this collar is featured for its nylon webbing knitted woven going through the premium welded steel with chorme plating, it helps keeping your pet's hair from getting caught in the collar and tangled This is a nice collar for dogs with longer hair that gets matted and tangled with regular chain collars, also it will reduce the skin friction and chain noises