-
API 8.5 inches hybrid drilling bit PDC-roller compound ye hard hard yakaoma
-
API fekitori 17.5 inches PDC uye tricone hybrid drill bit yemvura yakadzika
-
9.5 inches Hybrid bit PDC yakasanganiswa necone roller yekuboorera mafuta
-
API 12 1/4 inches hybrid bit yekuchera mafuta emvura akadzika nedombo rakaoma