Duplo compatible crane

You need 5 pieces M5 bolt and 5 pieces M5 lock nut.
Full length of bolt 1 (includes hat)=18mm
Full length of bolt 2 (includes hat)=32mm
Full length of bolt 3 (includes hat)=29mm
Full length of bolt 4 (includes hat)=24mm
Full length of bolt 5(includes hat)=26mm
You can cut the bolts to the appropriate length on the saw
You also need washers.

25.6.2017 Added own file to each part

Engineering jobs from Finland and google translations.

Designed tinkercad.