This adjustable coupler leash is suitable for dogs weighing between 10-20 pounds. Walk two dogs together on one leash with this great 2 Dog Coupler leash. The leash portion is 3" long and each of the couplers are 18" long and adjusts down from that. It is all 1/2" wide nylon webbing. Swivel snaps are used to avoid tangles and all hardware is nickel plated steel. A swivel is in the handle to help avoid tangles even more.