ST-5540K Air Impact Wrench-3/4″ -13Pcs

Maintenance of the machine is very important. If you are a professional engineer, we recommend that you use 5-10 drops of professional pneumatic tool oil daily before use, and use this tool after 5 seconds of idling to provide higher speed and greater torque.

If you are an amateur engineer, we recommend that you drop 5-10 drops of professional pneumatic tool oil after each use, and store it after 5 seconds of idling for better torque output next time

A valve controls how much torque is applied. The tool can be set to spin in either direction. An air impact wrench should not be used for fine tightening of wheel nuts