This T-Bar Kit is for use with Cardinal Gates. It allows you to piece together series of BX2 extensions to create a safety gate as long as the eye can see. The "T-Bar Kit" is needed only for the T-Bar that is attached to the swinging part of the gate. It includes a hinge for the gate. You only need the T-Bar (not the T-Bar Kit) for locations where the T-Bar will be attached to the gate extensions. Gate and Kits sold separately.