Once it was all you could get in a shutter, that's until our patented shutter arrived in 2000. There's no excuse in choosing a shutter that is meant to add value to your property by short cutting on price or lack of research. Staples are machine applied in the very narrow edge of the blade profile and then linked to the stick that controls the opening of the shutters. Sometime clips are used, sometimes they are made of brass so that they won't rust, - and sometimes they don't.