1/4" x 14" Rawl FH Drive

The Rawl Drive is a one-piece tamperproof, pre-expanded carbon steel anchor for use in concrete and stone.  The flat head (counter-sunk) style is particularly suited for wood-to-concrete anchoring.  The anchor is made using two heat treating processes to form the split type expansion mechanism on the working end of the anchor.  As the anchor is driven into the base material, the two sheared halves of the expansion mechanism are compressed to match the diameter of the drilled hole.