1.100% plywood 2.Quality: smooth surface, easy to cut, drill, laser engrave, draw, paint, stick and more. 3.Application: it is a good material supply for handcraftsman, hobbyists, woodworkers, kids, teachers and more. 4.Created with safe non-toxic, high quality laser cut wood pieces, this is the perfect project for both children and adults to work on together.will fit together to be engineered without an issue. No glue is required for constructing your Model Safe Kit for the parts to fit together tightly, but some sanding may be required.