This item is currently not available in the Guild Wars 2 API and you are seeing the last known version. The item has either been removed from the game or needs to be rediscovered.
Basic
Gizmo
Use to construct a guild siege golem build site. It has a lower supply cost than the alpha siege golem. Range 225. Requires 50 supply to complete.
"description": "Use to construct a guild siege golem build site. It has a lower supply cost than the alpha siege golem. Range 225. Requires 50 supply to complete.",