Image Item No. Description By  31061  Duplo, Brick 2 x 2 x 2 with Indented Sides (Tree Trunk) Catalog: Parts: DUPLO, Brick 51  31111  Duplo, Brick 2 x 4 x 2 Catalog: Parts: DUPLO, Brick 21  31113  Duplo, Brick 8 x 8 Catalog: Parts: DUPLO, Brick 19