Applicable Industries: Construction works , Energy & Mining, Drilling Tool Place of Origin: Hunan, China Type: Drill Bit Machine Type: Drilling Tool Certification: ISO9001 Material: Carbon Steel Processing Type: Forging Use: Well Drilling Color: Required Application: Rock Drilling Usage: Borehole Drilling Advantage: High Performance Diameter: 152-203mm Size: 6" Appearance: Smooth Product name: Rock Drilling Dth Bits