Due to the short links, this chain-type slides very well through the ring. It is not permitted for VDH-verifications. ATTENTION: please note that this chain type is offered in lengths which are not appropriate for the mentioned weight. These collars should only be used for decorative purposes! Herm Sprenger is one of the leading manufacturers of dog training products, best-known for their quality, reliability, and safety. All products are made in Germany, utilizing only the finest materials and components. Through their continuous quality control efforts over the past 140 years, Herm Sprenger’s training collars are recognized as one of the best training collars sold on the market today.