This is an additional tree adapter that comes included in the MAG-PRO ARM ELITE KIT. This is a great option for those wanting to have minimal setup required when coming into a pre-hung set; Simply leave this bracket in the tree to eliminate movement, noise, and time spent setting up the system.
This is also a great option for those of you who maybe already purchased a few of the components of the MAG-PRO ARM ELITE KIT separately and want to complete the system.