Bolt Size: 4 x 40 mm Drill Size: 8 mm Maximum Fixing Thickness: 15 mm features: Interset cavity fixing and bolt High performance cavity fixings, ideal for fixing heavy objects securely on soft faced partition boards, plasterboard, hardboard and plywood The screw and fixture can be removed and re-used. (e.g. When moving radiators for re-decoration) using a standard slotted or pozidriv screwdriver Typical uses: Coat hooks to hollow doors, shelves and bathroom accessories to standard plasterboard, radiators and kitchen cabinets to double thickness and tiled plasterboard Pack of 6