This TBar 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.
The picutre above is a Stairway Special Gate (SS30) and a series of 21 1/2 inch extensions (BX2) and T-Bars. Cardinal Gates suggests using one T-Bar for every two extensions.