Beirui Dog Pet Martingale Pinch Metal Slip Choke Stainless Steel Chain Collar for Training Walking Obedience Behavior Link Double Plated for Small Medium and Large Dogs Dog pet training collar chain metal steel choke smooth rounded edges for superior comfort, make your dog looks so cool and stand out in the mass ,easy convenient to operate and safety in right way. Made of high quality stainless steel plated steel for durability and resistance to rust and tarnishing,limited closure ensures dog's safety,it's perfect for pet training. Design for showing or obedience training or walking,no sharp points or rough edges to chafe dog skin or snag dog fur when use. XS size: 12-15.5"(30-40cm) adjustable length; S size: 15.5-19.5"(40-50cm) adjustable length; M size: 17.5-21.5"(45-55cm) adjustable length; L size: 19.5-23.5"(50-60cm) adjustable length; XL size: 23.5-27.5"(60-70cm) adjustable length. Double chain stainless steel plated and durable with silver shine make your dog looks so cool and stand out in the mass and will not rust, tarnish or break. BEST PRICE & WARRANTY - We're original manufacture so that cost performance of the collar is very outstanding.It worth every cent of your money. Besides,we provide a 30 days quality grantee for you and we value every customer from my store. We want to make money with your satisfaction.