Fischer 568004. Product type: Expansion anchor, Suitable for materials: Autoclaved aerated concrete, Brick, Concrete, Gypsum fibre board, Masonry, Material: Nylon. Diameter: 4 mm, Length: 20 mm, Drill hole diameter: 4 mm. Minimum drill hole depth: 3 cm, Screw diameter (min): 2 mm, Screw diameter (max): 3 mm. Quantity per pack: 200 pc(s), Package type: Box, Screw anchors included in set: 200 x SX Plus 4 x 20