Flat chisel for working on unhardened steel, concrete, masonry, for removing welding beads, mortar residues, etc. octagonal shaft with sharp blade, avoid heating up to over 200 °C when sharpening chrome-plated, permanent corrosion protection with subsequently tempered striking head, prevents splintering according to current standards high hardness, ensures exceptional retention of sharpness and long service lives special alloy based on spring steel, hard and tough for long service life laser-marメーカー公称