"This box is an ordinary 12-step Cubic Japanese puzzle box. The only difference is that its design is slightly different from usual." *Material of natural wood : Walnut, Nyatoh, Urushi, Purple-heart, Mizuki wood. Opening methd of the puzzle box : 12 steps Moving panels and Slide keys : have 3 panels / 2 keys Outside size : 2.1 x 2.1 x 2.1 inch (54 x 54 x 54 mm) Inside storage space size : 1.0 x 1.6 x 1.6 inch (25 x 41 x 42 mm) Include Description (solution sheet) and the gift box Quality urethane finish