Ray Allen Manufacturing offers a wide selection of pinch dog collars, also known as prong collars, from the authority; Herm Sprenger. Herm Sprenger is a German company that develops prong dog collars that have been with an electro-welding process that guarantees consistent strength. Many professional police and military K9 handlers prefer Herm Sprenger prong dog collars because of the type of metal and craftmanship.
