-Resin sleeves are an effective way to create a fixing where there is a hollow void, such as for perforated bricks or blocks, or a more porous material-for example, blockwork.
-Resin is injected to fill the volume of the sleeve, and then forced through the small perforations when the fixing rod is inserted. This distributes the resin material evenly into the fixing cavity, forming a solid joint between the resin, the sleeve and the fixing.