Hanayama Cast Puzzles are the world's finest brain teasers. The keyhole is a high-quality, cast metal puzzle that is rated difficulty Mensa – Level. The theme is "groove" which was devised by Finnish VESA Timonen.
| Model Number | 30869 |
| Number of Pieces | 1 |
| Batteries Required? | No |
| Batteries Included | No |
| Material Type(s) | 金属 |
| Target Gender | Unisex |
| Manufacturer recommended age | 6 years and up |
| Item model number | 30869 |
| Product Dimensions | 12.07 x 7.62 x 0.25 cm; 86.18 g |
| ASIN | B00TSWNRJ2 |
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