[72BLAZERDUDE]

Blazer doors are basically truck doors with the top and rear window frame cut off to accomodate the fiberglass top. If you have the top off and the window down you dont have a window frame hanging out there. The door caps go on the top of the remaniing door frame above the wing window and helps to prevent leagage and cover up the hole in the door frame after it is cut off. These pieces are hard to find.