Buy Fischer - Resin Chemical Stud online from Parker Tools DIY Tool Shop, a leading supplier of Fischer - Resin Chemical Stud for Industry and DIY users. If you need to fix close to the edge of a brick or stone pier because you need to hang a gate or fix a letterbox or nameplate, drilling and using screws and bolts which expand in their associated wall plugs may crack or split the masonry. The way to get over this is to fix using chemical fixings and chemical resin injected into a pre-drilled hole. A section of the stud (threaded bar) is then screwed and bonded into the hole. The resin will go very hard causing the thread to bind to the masonry whilst leaving a short length of thread sticking out onto which you can bolt your ornament, gate post, bracket or other item for example.