Die CollarsThe Die Collar is a special tapping and fishing tool, but its operation is from the outside wall of the fallen pipes, such as oil tubing and drill pipe. It is more efficacious for those fallen sleeve substances without hole for with blocked hole.Please specify when ordering: Top Connection, ID of the fish to be retrieved, OD.Technical Parameters-- Die Collars             Model      Connection        Catch Size (mm)         MZ-NC26         NC26               41~52         MZ-NC26         NC26               50~68         MZ-NC26         NC26               62~80         MZ-NC31         NC31               69~73         MZ-NC31         NC31               71~82         MZ-NC31         NC31               76~95         MZ-NC38         NC38               86~108         MZ-NC38         NC38               95~118         MZ-NC50         NC50              110~135         MZ-4 1/2FH       4 1/2FH                 114         MZ-5 1/2FH       5 1/2FH                 141         MZ-6 5/8EG       6 5/8REG                 168If you have any further requirements, please freely contact us sales@sxgtpm.com