The Hangfast® is a hidden hanger that comes with a pre-installed 3.5″ rust resistant screw with an extra deep head designed to fit K-style Gutter. The Hangfast® consists of a one-piece channel-formed design with double reinforced support ribs that run the length of the bracket help to give it added strength. They are formed with pre-punched holes in the body of the bracket to be used with the T-straps for strap hanging the gutter (sold separately). The Hangfast® is available for both 5” and 6” gutters and comes standard with a clip for going over the back of the gutter.