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Note: The sizes are approximate.
Tips: How to use a box end wrench?
When using the box end spanner, hold the connection point of box end spanner and the bolt with your left hand. Keep the box spanner in perfect coordination with the bolt to prevent slipping off. Hold the other end of the spanner with your right hand and apply more force. The spanner can be used to enclose all the heads of bolts and nuts, so that the bolt angle will not be damaged and large torque can be applied.
What should I pay attention to when using a box end spanner?