Abstract: A formed metal piece is U-shaped to be fit to an outer edge of a framing stud, with a pair of side walls, at least one formed with a guide hole for accurately locating drilled holes for routing cables, etc. The front wall is sufficiently strong to provide nail shielding for protection of cables or pipes passed through the hole drilled in the stud. A series of pieces are installed in alignment prior to drilling the stud holes to speed the process. A cut out portion can be removed to optionally form a slot for installation as a nail shield reinforcement after the cables or piping is installed.