Image Item No. Description By  3437  Duplo, Brick 2 x 2 Catalog: Parts: DUPLO, Brick 46  31110  Duplo, Brick 2 x 2 x 2 Catalog: Parts: DUPLO, Brick 13  3011  Duplo, Brick 2 x 4 Catalog: Parts: DUPLO, Brick 30  2300  Duplo, Brick 2 x 6 Catalog: Parts: DUPLO, Brick 7  2291  Duplo, Brick 2 x 10 Catalog: Parts: DUPLO, Brick 8  29303  Duplo, Brick 4 x 2 Slope 45 Double Catalog: Parts: DUPLO, Brick 1