Center Roc, Roto Loc Underreamer Bit QL60 8.34 extended, 6.52 Retracted

• Wings lock in place to cut full diameter through any rock formation.
• No expensive starter casing teeth or ring bit left in the hole.
• Easily retractable wings.
• Positive locking wings can be used to retrieve casing.
• Simple, quick wing replacement.
• Improved bit face design to enhance flushing of cuttings and improve productivity.
• Size options from 5.5″ to 36″