Spring Hook Type Made of brass. For use on lightweight cabin doors. Opening between the door and the wall when fully opened must be more than 65 mm. Screws: ø4.1 mm x 5. Angle Adjusting Type Made of brass. For use on Cabin Doors. Adjustable in a 90 degree angle between the door and the wall by screwing three different holes. Needs a 75 mm gap between the door and the wall for installation. Screws: ø 4.1 mm x 6