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MZ die collar is a special external fishing tool that engages with the dropped tubular s such as drill pipes casing and oil tubing, by tapping on the external wall of the s. It can be used in fishing cylindrical s without inner bore or stuck inner bore. It is a highlyeffective tool in the fishing of dropped tubulars.
| Model | Product Code | Large wicker O.D. (mm) | Small wicker O.D. (mm) | OD(mm) | Catch size(mm) |
| MZ55×40-NC26 | L20-02000 | 55 | 40 | 86 | 48 |
| MZ68×50-NC26 | L20-02001 | 68 | 50 | 95 | 60 |
| MZ80×62-NC26 | L20-02002 | 80 | 62 | 114 | 73 |
| MZ96x74-NC31 | L20-03000 | 96 | 74 | 127 | 89 |
| MZ110x90-NC38 | L20-05000 | 110 | 90 | 143 | 102 |
| MZ122x102-NC38 | L20-05001 | 122 | 102 | 162 | 114 |
| MZ135x110-NC50 | L20-09000 | 135 | 110 | 175 | 127 |
| MZ148x128-NC50 | L20-09001 | 148 | 128 | 190 | 140 |
| MZ167x140-NC50 | L20-09002 | 167 | 140 | 203 | 159 |
| MZ178x153-6 5/8REG | L20-19000 | 178 | 153 | 211 | 168 |
| MZ190x166-6 5/8REG | L20-19001 | 190 | 166 | 219 | 178 |
| MZ210x185-6 5/8REG | L20-19002 | 210 | 185 | 247 | 203 |
| MZ239x216-7 5/8REG | L20-20000 | 239 | 216 | 280 | 228 |
| MZ251x229-7 5/8 REG | L20-20001 | 251 | 229 | 290 | 241 |
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