Wedge-style anchors install flush into holes in the mounting surface and create a female-threaded mounting point. They lock into place using an integrated expansion sleeve that wedges against the hole walls as the anchor is pulled upwards. They are permanent anchors that can only be removed by drilling out the anchor entirely.

Four-way expansion anchors install into holes in the mounting surface and create a female threaded anchoring point. They lock into place using four integrated anchor wings and a locking cone that forces the wings outwards, wedging the anchor in place. They are commonly used when drilling conditions are less than optimal, leading to misalignment or mis-sizing of the pilot hole.