The fischer expansion plug S is the original. The plastic plug is made of high-quality nylon. The fischer expansion plug S is available for fastening in holes with diameters from 4 to 20 mm and can therefore be used in numerous applications. Thin plug geometry simplifies installation. The twist locks characteristic of this plug prevents its rotation when the screw is tightened. Wood screws or chipboard can be used to secure the object. The fischer expansion plug S is ideal for fastening light objects to concrete and masonry.