Our Guardian Gear™ Classic Nylon 3-Way Couplers allow you to walk three dogs more efficiently on one lead. 4" coupler is designed for small breeds, 12" coupler is for medium to large breeds, and 24" coupler provides the greatest mobility for the largest breeds. Made of high-quality, durable nylon with heavy-duty swivel snaps. This Nylon 3-Way Couplers are available in these colors: Basic Colors are Black, Blue, Red. At this time, we have in stock the 12", used for medium to large dogs. If you need the smaller size or the larger size we would be glad to special order for you.