Brown Plastic Premium Plug is suitable for use with all types of concrete and masonry substrate materials. It is made from HDPE and has a plug length of 35mm. It can be used with screw sizes of 4.5 - 6 mm and a drill hole diameter of 7mm. The drill diameter should be reduced when used in soft materials. They feature anti-rotation fins for a more secure fixing. It is ideal for use with medium and lightweight applications.