|Extend bit into desired depth notch.
Drill into masonry 1/4" deeper than the screw length. (Use lower RPM for dense concrete)
|Insert hex screw into end of tool (for phillips screws attach the DFS Phillips Driver)
What length of screw
should I use?
Thickness of Material +
1 1/4" = Screw Length
|Drive screw into pilot hole to fasten object. (rotary only)