, 9 mm snap-off unsullied steel spring chicken for working in dunked environments, specified as wall paper installation. of unsullied steel with a double-honed spring chicken for unique sharpness and gilt-edged edge retention. strict 59 degree edge angle lancinating power and minimizes spring chicken breakage. The blades are to deletion through wallpaper, window film, tint application, paint, caulking, packaging, tape, shrink wrap, Cardboard, and else materials. of blades.