This is D65 of cutting edge. The cutting edges are produced as per ISO or DIN standard. The color is yellow. The material is 16Mn steel. The hardness is HRC35-38.Thewarranty time is sixmonths. Ourproduction is high quality. Pls try it on, Welcome to come to visit our factory.Our product design is reasonable, manufacture exquisite. We will attend Shanghai Bauma on Nov.23-26th,2010. Pls visit our booth N5 460.