"H" Thread Rock Bit Cross Carbide Insert 
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            "H" Thread Rock Bit Button Carbide Insert 
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          | Length Under Collar | 
          "AH" Series | 
          "BH" Series | 
          "CH" Series | 
          For broken & rough rock. | 
          For fast penetration. | 
        
        
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          7/8" x 3-1/4" Shank | 
          7/8" x 4-1/4" Shank | 
          1" x 4-1/4" Shank | 
          BITS SHOWN FIT ALL "H" THREAD RODS | 
        
        
          | Feet (Inches) | 
          Part No. | 
          Part No. | 
          Part No. | 
          Diameter | 
          Part No. | 
          Diameter | 
          Part No. | 
        
        
        
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