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 handcraftsmen, 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.