Original Stanley 1-11-952 heavy duty concave blades in safety storage box to fit all types of Stanley, Stanley FatMax, Dolphin, Allegro, Shark and other makes of hand tool. Used by professionals in industry, flooring, roofing, warehousing, subcontract packing, DIY, crafts, graphic arts and for many other uses. One of the worlds most famous brands so buy with total confidence. Manufactured in hardened and tempered carbon steel, these razor sharp heavy duty quality blades are designed to withstand the most arduous materials and tasks. The blades are lightly oiled and are packed in sturdy box of 100 pieces.