Instead of having two separate leashes, with each dog pulling in different directions, by putting them on a coupler dog owners have greater control and the dogs learn to walk together. When on a coupler, the dogs pull against each other instead, leaving the leash holder in control and preventing too much pulling. - A convenient way to walk two dogs with one lead. - This 61cm coupler only requires a single leash attachment. - Doubled and stitched premium quality nylon, webbing width 19mm. - Box stitched at stress points for added strength and durability.