Nuts for Knots 2-Knot Rope Tug with Tennis Ball will have your pet going 'nuts for knots'. The tough, durable cotton rope has a handle with the ball at the other end. This interactive toy will keep your pet entertained for hours. Throw it, toss it, play tug-of-war. It's great for tough chewers. Nuts for Knots 2-Knot Rope Tug with Tennis Ball comes in various colors.