This item includes ONLY the backpack adapter pieces from our SpiderLight Backpacker Kit. The metal holster, plate and pin are not included. There are two common scenarios where you might want this item:
If you already have a SpiderLight Holster and want to add the ability to wear the holster on your backpack.
If you already have a SpiderLight Backpacker and want the convenience of having a holster receptacle on a second backpack.