Tubing collar spear is used to catch fishes which have inner thread in workover of oil and gas. Tubing collar spear is used to catch fishes which have inner thread in workover of oil and gas. Specification of Tubing collar spear TypeMax O. D(mm)O.D of Fished TubingConnectionAllowable load(KN)BLM4880482-3/8TBG300BLM6085602-3/8TBG320BLM7392732-7/8TBG410BLM8995892-7/ ...