UGears Mechanical 3D Safe, Valentine's Gifts, Adult Puzzle, Wooden Brain Teaser, Kids, and Teens IQ Game is a classic UGears wooden toy in the form of engaging mechanical model kits and calls for the participation of users. This model of immaculate craftsmanship tasks you to join together several sheets of finely pre-cut plywood to create attractive structures without any glue or chemical. It comes in the form of a puzzle and challenges the owner to enjoy the thrill of solving how to piece this puzzle together to become one, with the help of the instruction booklet supplied with the kit that contains precise information that will guide you all the way through the assembly and installation. UGears Safe is DIY heaven, and it draws its design inspiration from a real life safe closet box. This 3D IQ puzzle for adults consists of 179 parts that are fun to assemble without glue. The model allows you to create a challenge with contenders trying to open the safe within a time frame and the winner claiming the price that is locked within the safe. You can secure your own UGears Mechanical 3D Puzzle which comes with a personal lock combination that allows you to Store your precious belongings a" your favorite candies, chocolates, jewelry, letters or whatever. The model is a wonderful gift for all occasions. Size: 7.7 x 7.3 x 6.9 in Package size: 14.6 x 6.7 x 1.4 in Number of parts: 179 Level: Hard Assembly Time: 6-7' hours Recommended Age: 14+ Kit weight: 3.00 lbs Manufacturer: UGears