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It is a coupler interposed between double hex socket and the driving tool. It is useful for tightening nuts located at difficult or angular positions which cannot be reached with standard tools.
This is available in1/4", 3/8", 1/2", 3/4", 1" square drives.
SPECIFICATIONS :
| Square Drive | Part No. | Outside Dia. | Approx. OAL | Torque limit (ft. lbs.) |
| 1/4" (6.3 mm) | TUJ - 1 | 13 | 40 | 25 |
| 3/8" (10 mm) | TUJ - 2 | -- | 50 | 85 |
| 1/2" (12.5 mm) | TUJ - 3 | -- | 75 | 200 |
| 3/4" (20 mm) | TUJ - 4 | -- | 110 | 690 |
| 1" (25 mm) | TUJ - 5 | -- | 63 | 158 |
