For two dogs (medium to large dogs): For two dogs, attach only one leash to the additional power coupler or divider and you can let 2 dogs run and keep control of both dogs at the same time Free one of your hands and control both dogs with a leash. Life is simple. No tangled --- enjoy the security of our intricate 360 anti-tangle attachment. You never have to worry about getting twisted lines when running 2 dogs and that your dogs can move around freely. Adjustable length --- choose from the regular 11-20 inches or additional long runners that are 16-28 inches so you can easily get two dogs of different sizes. The adjustable straps can be shortened or lengthened individually in order to be able to accommodate different dimensions even with different coupling necks. Durable and stable --- made of extremely durable 1 " nylon to ensure the safety of your dogs. Durable and insensitive - made of extremely hard-wearing 1 " nylon to ensure the safety of your dogs. The dog line works with all dog collars. Reflective design --- use extra security at night with the glowing reflective stitching that spans the length of the two lines. This double dog clutch offers you and your dogs a more comfortable and pleasant hiking experience. Specification: L-without handle, for medium to large dogs Color: black Material: nylon, chromed metal Packaging: 1 * dog leash, double leash