Our RUK Cob fixing plugs are expandable watertight cob plugs designed to provide extra grip. The watertight pin in these plugs expands when driven home, to give a firm grip into the substrate. The internal shank of the pin takes a 5mm diameter/size 10 screw at a maximum depth of 30mm to allow for subsequent installation of dry lining systems and/or wall ties. RUK Cob fixing plugs are particularly suited for jobs requiring installation of a cavity drainage membrane over a loose or unknown substrate. Size: 10mm x 90mm. Quantity: 100 plugs with seal.
Expansion pin will take a 5mm screw (size 10)
Use a 10mm drill bit.