Twist, turn, and tantalize your brain with the Hanayama Level 6 Cast Puzzle - Nutcase! Crafted under the ingenious mind of Dutch puzzle master Oskar van Deventer, this bewitching brain teaser is a masterpiece of mental and metal intricacy. Its deceptive 'nuts and bolts' facade invites you into a challenging cerebral duel that will have you twisting and aligning like a skilled puzzler warrior!

• Mensa-rated, high-difficulty brain teaser.
• Crafted from quality cast metal for durable puzzling fun.
• Consists of 5 interlocking metal pieces.
• Designed to improve cognitive skills and concentration.
• Compact package size for on-the-go mental workouts.