BINGPET Black Strong Nylon Adjustable Double Coupler Two Dog Leash No Tangle Made from durable nylon webbing ,sturdy plastic adjustment buckle ,heavy duty chrome plated ring and hook. The straps length are adjustable solve the issue caused by two dogs'differences in height.They not easy to move ,even after some tugging. Size:3/4" wide and adjustable from 8"-13" (not including the hooks and alloy connection ring).Suitable for mostly breed of dog.Small,medium or large,but it may not work well for extra small dog becaue of the heavy duty. This two dog leash won't get tangle,you can walk both dogs at the same time with one leash.And still have one hand freefor a water bottle or whatever If you're looking for a double leash extension, look no further!