The Nero Ball Classic TM - K-9 Ball On a Rope Reward and Exercise Toy - Police K-9 - Schutzhund The Nero Ball Used by Police K-9 and Military Working Dog Teams Worldwide 100% Natural Rubber Ball with Strong Nylon Rope Better Than A Regular Ball - Rope Allows You To Throw Further Motivate and Exercise Your Dog - No Cumbersome Launcher Needed!! USED TO TRAIN, MOTIVATE AND STRENGTHEN BOND BETWEEN YOU AND YOUR DOG.