100% new and high qualityThis toy comes from Ancient China.This was used for the elderly and children to develop intelligence， and was used in carpentry.They are very Magical.They are called The Lock of Luban or The Lock of Kongming.Compact and portable handhold designLarge angled structured and powerful fault-tolerantPractice your brain and improve your memoryPerfect for testing your mental skill and patienceGood game tool for you to pass timeSpecifications:Material: Wooden Color: BurlywoodSize: Approx. 6.5 x 6.5 x 6.5 cmPackage Includes:4 pcs Kong Ming lock toy