If your existing Headliner hardware(s) are in good shape you can re-use them. New Headliner cover is not included with the Headliner repair hardware(s).
Headliner Plastic Quarter Trim includes 2 plastic trim pieces one for each side, order 1 set per car. These plastic trims are located above the rear side quarter windows, they hold the Headliner flush with the Top frame.
Headliner Twine and Hooks are sold per side; you can buy 1 to fix 1 side or 2 to fix both sides. They are located behind the rear side quarter windows between the Top & Headliner; they hold the Headliner and the Top to the Top frame.