Rapid Heavy Duty Hollow Wall Anchor: Wall anchor bolts for double plasterboard and cavity walls fixings, with increased gripping surface and high resistance to tearing Strong Cavity Wall Fixings For Plasterboard, Chipboard, Plastic Or Metal Laminate Sheets: Heavy duty metal plasterboard plugs hold up to 25kg in weight. Quickly and simply secure items to the wall Easy To Use: For 16-26 mm wall thickness (two plasterboard or laminate sheets). For fast and effortless installation, use Rapid setting tool XP10, XP20 or XP30 Premium Materials: Stud wall plugs and screws made from zinc plated C1022 steel. Plug: Ø8 x 46 mm, screw: M4 x 55 mm, PH2 head. Bulk buy set of 50 pieces High Quality DIY Accessories: Rapid Tools are specialists in fastening tools for professional and do-it-yourself applications, when building, renovating or decorating