Goobi GL-70 - The Magnetic Construction Set Goobi GL-70 is the starter package of the award-winning Goobi Magnetic Construction Set line Contains 70 pieces: 35 bars, 21 iron balls and 14 tripods Comes with a 32-page colorful Instruction Booklet Ages: 3 years and up IMPORTANT: Please note that iron balls are NOT magnets. Magnetic bars have magnets safely embedded inside each end of the bar. Under normal circumstances of use, the magnets inside the bars cannot break out. Improper use however can damage the toy parts. Always inspect the integrity of the toy parts before giving the toy to young children.