Yosoo Double Dog Coupler Twin Lead 2 Way for Two Small Pet Dogs Walking Leash Safety Chain Great for attaching two dogs to a single lead making walking two dogs much less work. With a single ring at one end to securely attach your lead and two strong trigger hooks at the other end to clip to your dogs collars. Can be used as coupler dog leashor dog collar Material: Stainless steel Total Length: 40cm,Diameter:2.5cm, Very Short,Only for small Pet.