Features Material Tungsten carbide Color Customized Standard Advanced production standard Grade YG6, YG8, YG15, YG20C, YG25, YT5 Brand HONGZUAN Application in processing some hard metal tools, especially for bolts, rivets, heading of screws and nuts, and so on. Information: Tungsten carbide cold heading dies for fasteners,high impact resistance,toughness ,wear resistance,and quality consistency.You are encouraged to use our professional carbide grades for cold heading &punching die nibs. Power metallurgical Compacting dies and other industries.For stable performance and high-cost-effectiveness.They have been proved to be ideal in making non-ferrous metal , ferrous metal and their alloys. The are different grade with different properties and applications . Of course the price will be different ,When purchasing , Pls first choose ur decision of the grade