The 10 Sun 54 Step Koyosegi Puzzle Box is very LARGE and one of the most complex traditional pieces created! Crafted and stamped by Yamanaka. Arrives with opening diagram. The outside measures* 12.20 x 6.30 x 2.76 inches with an inside secret space of 9.84 x 8.46 x 4.45 inches. Arrives with opening diagram . *Please allow added shipping time as this piece will be shipped directly from Japan. The small puzzle box in the picture is NOT included.