Because they are secure and strong!
Our secure screw gate carabiners complete the look of our climbing rope dog leashes.
They are industry grade products and are certified either 5KN or 12KN, that is, they can take on 500kg or 1200kg of weight pull. Not that any dog would weight that much, but what this illustrates is the robustness these hooks have for when your dog friend decides to take a sudden bolt in a different direction. You ain't gonna find any broke carabiners!
Plus, there are a variety of colours you can choose from to make your leash unique to you...