ITEM NAME:Classical Wooden Puzzle Toys Pole Ming Lock Luban Lock Q1R7 Classical Wooden Puzzle Toys Pole Ming Lock Luban Lock Q1R7 Recommended 5 years old and above, children should be used under adult supervision. This is an elusive challenge to all ages. It's hard to separate it, but harder to assemble. Assemble the careful observation and thinking, analysis of its internal structure. Our puzzles help to exercise the brain, develop intelligence, improve problem-solving skills, and reduce stress. Name: cubic brace Size: 5.6 x 4.2x 5.6cm. Material: wood Package Includes: 1 x Kong Ming Lock Toy Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..1 x Kong Ming Lock Toy. It's hard to separate it, but harder to assemble. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.