Sprenger Black Stainless Steel Prong Collar With Click LockMade in Germany from anodized stainless steel Easy open click lock buckle Famous Herm Sprenger quality Does not constrict [split] Herm Sprenger prong collars have long been considered the gold standard for prong collars. These collars are made in Germany from high quality stainless steeland anodized black. The black color blends nicely with dark colored dogs and helps reduce the visibility of the prong collar for sensitive environments. Click Lock