13 Holes Grader Blades with 3/4 Plow Bolts, include 5D9553, 5D9556, 5D9558, 5D9562, 7D1576, 9G3501, 9J3657, 9J7701, 4T3033, 4T2231, 4T2244, 4T3007 etc. Hardness is depend on raw material, 46-52HRC of 30MnB Boron steel (with heat treatment) and 26-32HRC of 45#C Carbon steel or 80#C Carbon steel. Paint color could choose KOMATSU yellow, CAT yellow, SHANTUI yellow, Or customized color. As for the logo, we would like you to choose SUNMACH brand, or we could do OEM, it all depend on you. Our code of conduct is HONESTY, the four principles for honesty are: honesty, consideration of each other's interests, accountability and transparency. We are sure we could be your good partner. We specialize in supplying cutting edge to world famous customer, such as Komatsu, CAT and Shantui. Our Komatsu, CAT, Shantui cutting edge have been exported to more than 50 countries of the world. The quality of cutting edge is approved by the largest distributors in Europe and Asia. Universal available to all brand bulldozer, loader, excavator domestic and overseas. We could provide you competitive price and stable quality. Our factory is located in North of China, which the labor is more cheaper and the production cost is lower than other district.China Grader Blades website:http://www.wearpart.com/grader-spare-parts/grader-blades/