- New challenge for the people who like to play puzzles toy <br>- These metal puzzles are the most representative of classical intelligence toy <br>- These metal puzzles can practice the brain, logical thinking ability <br>- IQ puzzles also can cultivate your perseverance and patience <br>- An all-time favorite for young and old<br><br><br />                                                                                                                                Dimensions: 2.17 in x 1.18 in x 0.20 in (5.5 cm x 3.0 cm x 0.5 cm)<br />Weight: 2.86 oz (81 g)<br /><br />