IADC637 12 1/4" (311.1mm)
DIN, JIS, AISI, API
Tungsten Carbide
Well Drilling, PCB Drilling, Metal Drilling, Masonry Drilling
Provided
Provided
Sealed Journal Bearing Bit
Available
Available
Wear Resistant,High Performance
Oil/Gas/Geothermal/Mining/Geological Survey,HDD...
Far Eastern Drilling
Plywood Case
35*32*52cm