Description: This lock is an ancient Chinese traditional civil construction fixed combiner There are various kind of toys which belong to Kong Ming lock， with different shapes and internal structures and are generally easy to dismantle but hard to install. Assembly requires careful observation， thinking and analysis of its internal structure. Conducive to the development of the brain， flexible fingers， it is a great educational toys. Great for showing your noble taste. Great for both home and travel use. A must for personal use or gifts. Color: wood Material: wood Package dimensions: about 8 x 5 x 5 cm Product dimensions: about 45 x 45 x 45 mm (before unfolding) Shape: regular hexahedron Suitable for kids over 6 years old Features: Puzzle， brain health， relax physically and mentally， develop intelligence， flexible fingers， full of fun Maintenance: Clean with a dry cloth， prohibit from water and exposure to sun Note: 1. Small parts included. Children under 3 years old are prohibited from using 2. Please use under supervision of adults 1 x Puzzle Jigsaw 1 x Instruction drawing In original package