100% Beech Size:2.95 x 2.95 x 2.95 in Powder Keg：Precision assemble twelve non-identical pieces into a cylindrical shape. Every piece is completely unique, handworked from premium grade, fully wood. Recommended for ages 5 & up, children should be used under adult supervision, water-based paint, touch smooth. Powder Keg: 2.95 x 2.95 x 2.95 in (7.5 x 7.5 x 7.5 cm). Please confirm this is the suitable size before order this brain teaser toy.