Frame Fixings are heavy duty fixing used to attach wood or an other material to a solid wall. e.g. For attaching a wooden beam to a concrete wall to build upon. Frame Fixings usually have two parts. The Screw and the Fixing. The work in the same way as your traditional wall plug but they are just bigger versions. Various of sizes to choose from depending on the application. Hammer in Fixings are similar to Frame Fixings. They are pre-assembled. You simply drill a hole, and tap the hammer in fixing all the way home. These are used more commonly as the save time on assembly. Various Sizes to choose from depending on the application.