extension rod Features: 1) Used together with electric hammer for holing, spading, cutting or slotting in conc extension rodFeatures( ... tool part,cutter shank): 1) Used together with electric hammer for holing, spading, cutting or slotting in concrete and brick wall2 ... big flat chisels, gouges and groove chisels3) The length of chisels is up to customers List Of extension rod(tool part,cutter shank)