"TC" TAPER Rock Bit Cross Carbide Insert 
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            "TB" TAPER Rock Bit Button Carbide Insert 
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          | Length Under Collar | 
          "AT" Series | 
          "BT" Series | 
          "CT" Series | 
          For broken & rough rock. | 
          For fast penetration. | 
        
        
           | 
          7/8" x 3-1/4" Shank | 
          7/8" x 4-1/4" Shank | 
          1" x 4-1/4" Shank | 
          BITS SHOWN FIT ALL TAPER RODS | 
        
        
          | Feet (Inches) | 
          Part Number | 
          Part Number | 
          Part Number | 
          Diameter  | 
          Part Number | 
          Diameter | 
          Part Number | 
        
        
        
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