Dean & Tyler Herm Sprenger Original NEW Pinch Collar "Neck Tech", Size: 19", Stainless Steel, Life Time Warranty! - Herm Sprenger's Neck-Tech Prong design features a stainless steel collar - Each part stamped from solid coiled stock. 19 " size - This unique design imitates canine teeth. - Allows the collar to have a more natural "bite" during the correction pull. - Nylon billets with a safety buckle.