**Features** *For fixing items into solid or hollow brick and masonry.|*High grade PA66 nylon sleeve giving extra durability and extended life for the fixing. *Tapered expansion nut made from glass fibre reinforced nylon gives ultimate sleeve expansion. *Six anti-rotation fins to hold the fixing secure on application. *Hardened single thread screw with No 3 cross recess. *Nylon grade material is Nylon 66. *Zinc/Yellow plating independently salt spray tested to 72 hours.