The Dura-Bell from Hampton Fitness offers one of the most exceptional innovations in the fitness industry since the grip plate. Hampton Fitness holds the U.S. patent on a round cylinder head that is screwed onto the end of a solid dumbbell handle, then reinforced with a quarter-inch roll pin through the head and handle itself. These dumbbells have urethane encased heads and ergonomic hardened chrome handles. Be sure to bring home the incredible, guaranteed quality of the one and only Dura-Bell Dumbbell.