Image Item No. Description By  4066  Duplo, Brick 1 x 2 x 2 Catalog: Parts: DUPLO, Brick 18  3437  Duplo, Brick 2 x 2 Catalog: Parts: DUPLO, Brick 48  31110  Duplo, Brick 2 x 2 x 2 Catalog: Parts: DUPLO, Brick 7  3011  Duplo, Brick 2 x 4 Catalog: Parts: DUPLO, Brick 37  31111  Duplo, Brick 2 x 4 x 2 Catalog: Parts: DUPLO, Brick 16  2300  Duplo, Brick 2 x 6 Catalog: Parts: DUPLO, Brick 16