6 inch PDC Drag Bit ,4 blades

7 1、2 inch PDC Drag Bit ,3 blades

9 5、8inch,4 blades step Drag Bit

118mm 3 blades step Drag Bit

17.5 Rock bit

5 1、4 IADC537 Pilot Bit

6 1、2 IADC537 Pilot Bit

6 IADC537 Pilot Bit

7 1、2 IADC537 Pilot Bit

7 7、8 IADC537 Pilot Bit

8 1、2 IADC517 Pilot Bit

8 1、2 IADC637 Pilot Bit