The 16L water tank with landing skid is semi-assembled, quite easy to assemble.

Package Included:
20x17x450mm carbon fiber tube x 4
20x17X580mm aluminum tube x 2
T-connector for landing skid x 4
Water tank connector to landing skid parts x 4
16L Water tank x 1
Battery fixed plate x 1
Landing skid sponge x 4
Screw combo x 1

Installation Holes: