| Drive Size | : | 3/8 in |
| Drive Type | : | Hex x Square |
| Locking Type | : | Ball |
| Material | : | Steel |
| Overall Length | : | 4 in |
| Type | : | Tighter Tolerance |
Apex®, EX-370-B-4, Hex Extension, Tighter Tolerance, Hex x Square Drive, 3/8 in Drive, 4 in Overall Length, Ball Locking, Steel
- Proprietary Steel and Heat Treat Process Yields Greater Strength and Longer Bit Life
- Cutting-edge Machining Process Results in Tighter Tolerances and Superior Product Consistency
- Better and More Consistent Fit to Fasteners Leads to Better Torque Transfer
- Pin Lock Feature Provides Best Retention, Ball Lock Feature Provides Quicker Changes