DOCO Signature Coupler features of perfect combination of PERFORMANCE and STRENGTH. Leash is designed for people and dogs that love to enjoy the outdoor active lifestyle. Chrome polished, zinc alloy durable metal 360 swivel hook is comfortable to snap on any dog collar or harness. Solid and vibrant colors are easy to see. You can adjust both side with tri-glide to fit your dogs’ walking behavior or their size.Improve your walking enjoyment and safety when walking more than one dog. Instead of feeling like a maypole, your dogs will learn to work together to move forward instead of getting distracted and pulling you every which way but ahead. Special Features100% high quality nylonHeavy duty stitching for long lasting qualityMakes walking multiple dogs easy and convenientTriglide in both side, can adjust the length of the leash360 Heavy duty zinc alloy swivel hook that prevents tangles and increase safetyVibrant colors are easy to see