Features:： ■Bi-metal ■RM80 Backing material with High fatigue resisting ■M42 Teeth material 8% Co,hardness of teeth Rc67-69 Advantages:： ■Heat and wear resistant ■Shock resistant ■Longer blade life Applications:： ■High, mesne, low percentage of carbon ■Alloy steel, stainless stell ■All kinds of shapes of section