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, Each includes a hangtag, All Guardian Gear couplers are guaranteed for life, Items may be combined for quantity discounts, Coordinating 2-Way Couplers (see item TP814), Collars (see item TP811), Leads (see item TP819), and Harnesses (see item TP817) are also available and sold separately, SKU: PETED8260