Large Blue Rocket Cluster

The Large Blue Rocket Cluster is a type of firework associated with, but not exclusive to, the Lunar Festival event.

A Cluster Launcher is required to use a Large Blue Rocket Cluster. (see Notes section)

Source
This item is crafted with Engineering (275); taught by Schematic: Large Blue Rocket Cluster.

(Unlike several of the Lunar Festival fireworks, this item can only be crafted by Engineers.)

Object of
Lunar Fireworks requires that you launch eight Lunar Fireworks (color and size not specified) and two Cluster Fireworks (color and size not specified). Large Blue Rocket Clusters are a Cluster Firework.