This hook does it all. It can penetrate or pull all types of materials used in the building trades. It features two sharpened blades, one on the top for penetration during thrust and one underneath for slicing on the pull stroke. An arc hook on the back of the top blade is used in place of limited space. A chisel tooth of 1-1/2" right angle blade - tooth is sharpened to penetrate loose materials on the chop stroke.