1/2 Electric Wrench Hexagonal Extension Socket, Specification: 21x78mm Long

1. Material: steel
2. Features: ordinary
3. Standard: metric
4. Surface treatment: blackening
5. Strong locking force without slipping
6. Inner hexagon design, large torque
7. Integral heat treatment process, high hardness
8. Wear-resistant, durable, corrosion-resistant, not easy to rust
9. Scope of application: electric wrench, small jackhammer, large ratchet wrench, square socket interface