... bits)3. Casing(Rod) shoes/Casing bits4. Reaming shells5. B, N, H, P, NT, HT, PT drill rods6. BW, NW ... HW, PW casing.7. Core barrel and accessories:B, N, H and PQ(Inner & Outer Tube,Head assembly,Locking Coupling ... Inner Tube Stabilizer Ring,Landing Ring,Landing Shoulder etc)8. N & H overshot.9. PDC bits (coring or non- ... coring)10. B, N, H, P, NT, HT, PT drill rods and BW ...