It may look like just a great little magnetic dart game, but oh, there’s so much more that makes it a bull’s eye. For starters, it uses high-quality Neodymium rare earth magnets. And the six darts are a marvel of perfect lightweight balance, which is the bottom line in the dart world! 16 inches in diameter. From Marky Sparky Inc, for ages 6 years and up. WARNING: CHOKING HAZARD - Small Parts. Not for children under 3yrs. WARNING: CHOKING HAZARD—This toy is a marble. Not for children under 3 yrs.