Tool for boring hole and inserting expansion anchor

摘要

The tool has a pin making the hole in the porous masonry, with a first depth-marker fixed at a set distance from the front, pointed end of the pin and indicating when the correct depth has been reached. A second depth-marker at a fixed distance from the holder (20) for the expansion anchor indicates the depth of the expansion anchor. Expansion tongues (32) protrude longitudinally from the front end of the anchor body (30). An expansion body (40) rests against the bottom of the recessed hole when the expansion anchor is driven in, and pushes the tongues apart. The anchor body has a longitudinal recess holding and guiding the shaft (38) of the expansion body. The holder has a narrow part (42)into which the shaft protrudes.