12 1/4'' TCI Iadc 617 Tricone Hole Opener,reamer Rock Bit

Hole opener-Fixed

Name: Hole opener

IADC code:117,217,237,437,517,537, 617, 637, 737, etc

Sizes range: 8" to 62 " and customized according to drawings or requirements.

Pilot size:5 1/2”,6 1/2”,8 1/2”,12 1/4” ,17 1/2’’etc.

Bearing type:Sealed bearing.

Thread type:REG/IF/FH/Pulling eye etc.