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■ Aluminium Bronze Alloy and Beryllium Copper Alloy
■ DIN3122
■ Die Forged
■ Used for driving manually operated sockets for working in restricted places.
| Number | C inch | mm | mm | Be-Cu g | Al-Cu g |
| 121-1002 | 3/8 | 200 | 50 | 314 | 287 |
| 121-1004 | 1/2 | 230 | 60 | 410 | 380 |
| 121-1006 | 3/4 | 280 | 75 | 765 | 699 |
| 121-1008 | 1 | 300 | 85 | 1160 | 1060 |
