I am selling 5 unused aluminum 30 mm vertical tube joints, left over from an unfinished project.
Manufacturer documentation:
https://www.rjxhobby.com/uav-fpv/drone-tube-joint/rjxhobby-90%C2%B0-d16mm-20mm-25mm-30mm-35mm-40mm-landing-gear-vertical-mount-base-nozzle-connecting-rod-fixing-parts-for-rc-plant-agriculture-uav-drone
Price on request, feel free to make an offer.
Photo:
