3.5/4/4.5/5/6/7/8 Inch 4‑Blade Arc PDC Bit

When you need reliable drilling bits for mine prospecting and water well projects, our size‑complete 3.5‑8 inch 4‑blade arc PDC bit is your practical solution. The full size range from 3.5 inch up to 8‑inch covers small shallow boreholes to medium‑diameter drilling holes.

The 4‑blade arc profile brings good junk removal performance, helping cut rock debris flow out smoothly. Various PDC cutter shapes are optional to cope with soft soil, medium‑hard sand rock, abrasive rock formations. Thread connection can be modified to match your existing drill string, no need to change your current drilling tools.

Different size corresponds to different working scenarios: small‑size 3.5‑4.5‑inch bits for shallow mine sampling; 5‑6‑inch for regular water well; 7‑8‑inch for large‑diameter water well and mine ventilation hole. As manufacturer, we can adjust cutter exposure, bit gauge and thread according to your site drilling conditions.