This style stone anchor “twist anchor” is designed to be fastened to a back up wall and have horizontal spacing. There is a twist in the middle of this  stone anchor so that it can be used at the edge of a piece of stone and be able to be inserted into the kerf on the edge of that stone.  This stone anchor can be manufactured in Stainless Steel or Galvanized based on customer specs. While it is not the most popular stone anchor, we see this anchor becoming implemented more and more.