1. Made of high quality steel with high hardness and durability.
2. Adjustable socket wrench, universal socket wrench can easily withstand high torque, firmly and correctly grasp all nuts and bolts in its adjustable size range of 10-19mm.
3. Good quality, maintains equal force on all sides of the fastener opposite the fillet, is durable and retracts the shape of most objects.
4. Wide range of adjustability: replace 3/8"to 3/4" and 10 to 19 mm sleeves.
5. Application, immediate adjustment to hold most nuts, screws, hooks, square head screws, bolt heads, etc.
6. Suitable for any standard 3 / 8 inch drive wrench.
7. Easy to use, easy to handle large torque, firmly grasp, one hand operation.
8. Maintain a uniform force on all sides of the fastener relative to the fillet.
9. It can easily cope with high torque, firmly and correctly grasp all nuts and bolts within its continuously adjustable size range.