14in   20in Adjustable Collar Black, 40   120 lbs Dog By Majestic Pet Products 14-inch -20-inch Black Adjustable Pet Collar Medium size dog collar made from 3/4-inch heavy duty nylon webbing Tough durable plastic side release buckles Nickel-plated welded steel D-rings and tri glides for easy adjustment Dimensions 14-20-inch L by 3/4-inch W