Mounting light fittings or tool racks on a rough and solid surfaces is easy with a tesa® Adhesive Screw Triangular for Brick & Stone 5 kg. Theyre seriously tough, theyre removable and you can use them indoors or outside, too. You wont even require any toolseverything you need is included.How to applyStep by step 1. For an optimal bond, use a brush to clean away as much grit or dust as you can from the surface.2. Take off the protective foil from the adhesive foam tape and lightly press the adhesive screw to the surface. The tape is there only as a way to keep the screw in place while you apply the adhesive. The screw head should be aligned so that the body of the Adhesive Screw will be concealed behind the object.3. Using the key in the pack, pierce the nozzle on the tube of adhesive before sliding it over the other end. 4. With the nozzle poked into the bigger hole, squeeze the adhesive into the screw body by twisting the key. Continue until the adhesive starts coming out o