פּראָגרעס־פֿאַרב־פֿאַרב־פֿאַרב

9 1/4 קײנס

8 5/8 "

12 1/4" TRICONE BIT IADC114/117/127/217/317.

IADC114/117/127/217/37

16 קײנס

17 1/2 קײנס

17 1/2" TRICONE BIT IADC114/117/127/217/317.

IADC114/117/127/217/37