Made of high-quality chromium molybdenum steel forging, cold pier type heat treatment, high hardness, and impact resistance
Surface phosphating treatment Explosion proof performance, more impact resistant. Immerse in rust proof oil. Strengthen rust prevention
Four sided drive circular arc interior angle design, strong locking, not easy to slip
Suitable for thickening design of pneumatic and electric tools Superior impact resistance, strong torque, and long service life
| product NO. | size |
| BK – 2 127 3 0 | 1″-3/4 |
| BK – 2 127 3 1 | 1″-3/4″ |
| BK – 2 127 3 2 | 1″-1/2″ |
| BK – 2 127 3 3 | 1″-1.5″ |
| BK – 2 127 3 4 | 3/4″-1 |
| BK – 2 127 35 | 3/4″-1/2″ |
| BK – 2 127 3 6 | 1/2″-3/4″ |
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