Offshore Drilling Rig Accessories 1.Sizes rang from 3 7/8 -26 2. ... all IADC code 3.Reliable quality and best pricebit Offshore Drilling Rig AccessoriesMain features1.Cutting Structure of this type sealed and non ... ,water well ,mining and tectonic industries ,oil field, construction, geothermal, directional boring, and underground foundation work Offshore Drilling Rig Accessories