For hammerset anchor, with visual setting check. The hammerset anchor E/ES is placed into the drill hole in cotter-pin installation and reliably expanded in the hole using the marker expander tool. The use of the marker expander tool creates a visible marking on the anchor sleeve that confirms correct assembly and thus ensures easy and convenient positioning. In the event of misses, the hand protection provides optimal protection. Application area: For expanding the E and ES hammerset anchors.