4Pcs/Set Brain Teaser Metal Puzzle Sets, 3D Unlock Interlocking Puzzle, Metal Knot Puzzle Mind Games, Puzzle Switch Games, Adults Educational Toy Gift, Stop Addicted to Mobilephone - VolksRose, PuzzlesSets-002

• 【DURABLE AND SAFE】All alloy casting, special crafted surface treatment, sturdy and durable, rich in heavy metal texture, all edges are polished to avoid injury to hands. 【EDUCATIONAL AND RELIEVE STRESS】Each brain teaser contains a mathematical principle that develops your logical thinking skills and helps train your eyes and hands in coordination, and is also ideal for relieving stress and passing time. 【DEVELOP CONCENTRATION ABILITY】 As a recreational game to kill time, the brain teaser puzzles are helpful in improving logical and creative thinking, and also provide you with an educational.entertainment activity to keep you away form the electronic products. 【VERSATILE AND GREAT GIFT】These 3D unlock interlocking puzzles are suitable for people over 14 years old, It is a fun puzzle game that gives you a sense of achievement as you unlock each different metal lock, making it a great gift for friends and family, as well as an indispensable game for parties and group games. 【WHAT YOU WILL RECEIVE】The package contains with 4 pieces of brain teaser game toy in different shapes, so that you can enjoy different gaming experience and challenges., Manufacturer: VolksRose