Image Item No. Description  44198  Duplo, Brick 2 x 2 Slope Curved with Hole Connector Catalog: Parts: DUPLO, Brick  Knob  Duplo, Brick 2 x 2 with Small Center Hole (Pull Toy Knob) Catalog: Parts: DUPLO, Brick  2788  Duplo, Brick 24 x 36 Catalog: Parts: DUPLO, Brick