The Boss Pet XXL Dog Twin-Swivel Vinyl Coated Tie-Outs are the best available! With patented twin-swivel snaps that virtually eliminate tangling, and a patented direct-connect system that connects snaps to cabling, these cables are incredibly strong and virtually tangle-free. Premium quality Comfort Snap protects dogs extra larger necks. Premium galvanized cable is coated in crack-resistant vinyl for a durable worry-free finish. Quality built for years of outdoor use.