The rimless plug sleeve and slimline plug geometry make it easy to push the plug into the drill hole for fast and simple installation. The S plug is suitable for both pre-positioned and push-through installation. It is possible to set the plug below the plaster to the bearing substrate to achieve the maximum load-bearing capacity. The anti-rotation lock prevents the plug rotating in the drill hole, thus guaranteeing a high level of installation safety. When turning in the screw, the S plug expands in two directions, thus providing a very secure fixing. As the plug expands in two directions, it is possible to direct the expansion forces so that they run parallel to the edge of the building material by turning the plug. The edge distance must be at least one plug length.