Just the right size for an extra set of keys or small tools, this Heartwood Knock Puzzle Box is a fun storage method. This little box is secure, but simple to open and comes with instructions. The box itself is made of American Cherry and features Classic Inlay across the top. Always a clever conversation starter, puzzle boxes are never exactly what they seem. This box measures 4 inches x 2 inches x 1 1/4 inches.