Quickly locate your buried Xspot with the XLocator Tool set. Begin first with the Xtreme Locator that finds your Xspot moving over the wall with it's 40lb pull magnet. Then use the Xcentric to center into the Xspot's location within 1/4 inch. Making a mark in each of the four holes provides you with a drill point. Use the Xbooty bag to prevent damage to the finished surface.