... by material ASTM4142 or 42CrMo, heat treatment with Auger tooth / teeth, digger tooth, digger teeth. (SBW 35,SB120,SB 80,SB 35,SB ... and make the products differently according to customer's requirement. auger teeth/bit(SBW 35,SB120,SB 80,SB 35,SB 40,SB ...