Duplo, Quatro and Primo
Colors
1
Sets
4
Early Simple Machines Set
2008
Special Elements for Early Simple Machines Set
2002
Early Simple Machines II
1998
Fun Time Gears II
![Duplo Technic Gearbox [Dacta Screw Block]](https://cdn.rebrickable.com/media/thumbs/parts/elements/4113297.jpg/250x250p.jpg)
