The GoughNut Ball Black is an interactive toy, not for constant chewing! Our Original GoughNut ring design is the most durable design and should be used for power chewing.
Pro 50 - The GoughNuts Black Ball 50 is our most durable ball! This is High Modulus, 50 Hardness (10 points higher than our original GoughNuts Black recipe). This recipe is only for "The Power Chewing Dog." The Pro 50 toys are marked with a YELLOW dot. This ball will bounce less that our other ball products. This "50" will NOT float.
Size: 3" diameter