9 1、2 IADC537 Pilot Bit

9 7、8 IADC517 pilot bit

9 7、8 IADC537 Pilot Bit

10 HDD hole opener

12 HDD hole opener

14 HDD hole opener

16 HDD hole opener

18 HDD hole opener

20 HDD hole opener

22 HDD hole opener

24 HDD hole opener

26 HDD hole opener