At Agri Supply, we stock over 250,000 disc blades from 14" to 36" Plain or Notched. We currently import our disc blades from India , Brazil and China . All of our disc blades are heat treated to provide maximum resistance to breaking. Indian disc blades are 1070 Steel, 38-42 HRC. Brazilian disc blades are 1080 Steel 38-42 HRC, China disc blades are 65MN. 38-42 HRC. Raised Flat Center and Cone style disc blades are also available.