The Nero Ball Extreme - Solid Rubber Dog Training Ball On A Rope - Exercise and Reward Toy For Dogs NEW! The Nero Ball  Extreme - Solid Rubber Ball For Heavy Chewers Used by Police K-9 and Military Working Dog Teams Worldwide Better Than A Regular Ball - Rope Allows You To Throw Further Motivate and Exercise Your Dog - NO LAUNCHER NEEDED! - Easy to Carry In Pocket. USED TO TRAIN, MOTIVATE AND STRENGTHEN BOND BETWEEN YOU AND YOUR DOG.