Revit family - Drop down menu for a welding plate with bolts 

This is a short and sweet video where we learn to create a drop-down menu for a welding plate with nested bolts.
Learn everything about creating a parametric Revit family:
engineerbear.com/revitfamily/
Timecodes
0:00 intro
1:20 Creating different types innside the family
2:00 Fast forward
3:00 Flexing the drop down menu
3:30 Adjusting the bolt family
4:20 Create a costum type