| Condition |
new |
| Place of Origin |
China (Mainland) |
| Brand Name |
jianghan and others |
rock roller bits1)certified by ISO9001&API2)Fast drilling rate3)Strong cutting structure durability4)be used for water well, oil field, underground, construction, geothermal, directional boring5)Be used to drill low compressive strength,soft formation6)various of model and dimension avaliable7)rubber seal or metal seal8)IADC:437,517,637,6179)high quality and competitive price10)including drill rods,drill collar,rerun steel tooth bits, ,used drill bits stock,used mud pumps,etc