Pack of 50 pieces of Stanley CARBIDE heavy duty blade to fit all types of Stanley, Stanley Fat Max, Delphin, Allegro, Shark and other makes of hand tool.Stanley part number 8-11-800.These Stanley knife blades have carbide edges, which allow the rest of the blade to remain flexible.Great for paper, card, leather, and most sheet materials but ideal for carpet, lino, vinyl. Stanley Tools used by professionals in industry, flooring, roofing, warehousing, subcontract packing and for many other uses. One of the worlds most famous brands so buy with total confidence.