Product Specifications
7-1/2''
                        Customized
                        AISI, API
                        Taper-length
                        Center Drill Bit
                        High Carbon Steel
                        Well Drilling
                        Drilling Tool
                        Forging
                        High-Efficiency,Wear Resistant
                        Alloy or Tungston Carbrid
                        5 Inch-26 Inch
                        13,16,19mm
                        3-9 Blades
                        Oil,Gas,Wells
                        Soft to Hard
                        Longyue
                        Wooden Case
                        8 1/2''
                        Hebei, China
                        8207191000
                        

