12 1/4"
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
