The Allen wrench is also called the Allen wrench. Common English names are “Allen key” and “Hex key” (or Hex wrench). A tool for driving bolts and screws with internal hexagonal heads. It exerts force on the screw through torque, greatly reducing the strength of the user.

Different from the common one/cross screw batch in our daily life, the hex wrench exerts the force on the screw through the torque, which greatly reduces the user’s strength, and can easily achieve the purpose of tightening the screw.

It can be said that the Allen wrench, although not the most commonly used, is the most useful of all the installation tools involved in industry.

Advantages of Allen wrench
1. It’s simple and lightweight.

2. There are six contact surfaces between the hex socket screw and the wrench, which can be fully stressed and not easily damaged.

3, can be used to screw deep hole.

4. The diameter and length of the wrench determine its torsional force.

5, can be used to screw very small screws.

6. Both ends of the wrench can be used.