Dean & Tyler 18-Inch by 3/4-Inch "Leather Martingale" Dog Choke Collar with Chrome Plated Steel Chain, Fits Neck 16-Inch to 18-Inch, White Made from Top Quality European Leather Choke collar, Chrome Plated Steel Chain and Herm Sprenger hardware Available in Different sizes Width: -inch leather, 1/6-inch chain thickness Collar Size:18" by 3/4"