A new twist to an old favorite - a Deep Blue Dog Obedience Dumbbell. With our J&J Molded Blue Plastic Dog Obedience Dumbbells there are no more broken wooden dumbbells for the rest of your life! Legal for use in all A.K.C. sanctioned matches and trials, these blue dog dumbbells are nearly identical to our wooden competition dumbbells in size and shape, but they do weigh slightly more. A slight texture is molded into the surface of the bit, giving your dog a better grip. Though these are made from a non-toxic plastic, they are not designed to be a "chew toy" and should not be left with an unattended dog. Sizes: Toy - 2" ends, 2" bit, 9/16" diameter Small - 2 1/2" ends, 2 1/2" bit, 11/16" diameter Medium - 2 3/4" ends, 3" bit, 13/16" diameter Large - 3" ends, 3 1/2" bit, 15/16" diameter