Image Item No. Description By  31195  Duplo Ball Tube 45 degrees Catalog: Parts: DUPLO 74  31191  Duplo Ball Tube Exit Brick 2 x 6 x 5 with Round Doorway Catalog: Parts: DUPLO 24  31193pb07  Duplo Ball Tube Exit Door with Polka Dots Pattern Catalog: Parts: DUPLO 21  31157  Duplo Slide Curved 180 degrees Catalog: Parts: DUPLO 20  31623  Duplo Technic Axle 8L with Paddle Wheel Gear Catalog: Parts: DUPLO 63  31622  Duplo Technic Gear 24 Tooth Crown Catalog: Parts: DUPLO 78  31625  Duplo Technic Tube with Worm Gear Catalog: Parts: DUPLO 71