Aerosmith®’s Pour-in-Place Inserts are used on wood form poured decks and installed prior to pouring concrete which reduces installation and material costs. Blue Banger Hanger PIP's are easy to use just strike the top of the hanger and drive the three mounting nails into the forming material until the bottom of the hanger is flush with the plywood. the hanger should be sitting 90 degrees perpendicular to the forming material. Once concrete is hardened, and forms are stripped, strike the mounting nails to break them off, it's that simple.