Used to cut and shape metals softer than the cutting edge of the chisel cutting edge angle designed to provide greater strength not intended to be used on masonry materials black oxide finish american made product this 1 x 12 cold chisel is made of alloy steel and has a black oxide finish to resist against corrosion. since 1856, our punches, chisels, and pry bars have been the go-to tools for oems and professional mechanics throughout the country. and while our company has grown to meet the needs of the professional market, as well as those of the do-it-yourself automotive enthusiast, our focus has never changed – leveraging our strength to build your business.