For Shim Free installation: of wooden doors, windows, insulation, paneling, built-in wall units and cabinets. Step2 - Drive screw until outer screw is flush with jamb using Crown Bit (Not Included). Step 3 - Adjust inner screw using T20 TORX Bit (Bit not included).
The screws are the greatest things whenever you're installing a door because they eliminate the need for all the shims I used to use. Plus if you need to adjust the door left or right it's very simple, just turn the inner screw.