Filament wound fiberglass transition
This one goes from 4" diameter air frame to 54mm air frame .
This comes as a kit that needs to be assembled and can be used as an
inter-stage coupler .
Included parts
Filament wound fiberglass transition cone
4" coupler/av-bay
54mm-4" fiberglass centering ring
54mm airframe 9" long
54mm coupler 5" long
CNC machined av-bay lids X 2