Durable Technologies' steel stamps and marking dies are custom engineered for identifying a variety of industrial products. Every die blank is skillfully machined to the user's specifications. Our custom dies satisfy any user requirement for marking machines, punch presses, press brakes and other machines. Our custom stamps can be made for marking on flat, curved, concave or convex surfaces - for stamping part numbers, patent numbers, trade names, trademarks, special lettering or other data. Durable Technologies' stamps for steel marking - the best steel marking tools available.