How to use: Just pick the right size of the combination square socket according to the utility hardware you're working with. Then use the ratcheting function to easily turn the bolts. The bolt - through design allows you to work smoothly even with long bolts. When working at heights, don't forget to use the tether hole to secure the wrench to avoid it falling. Maintenance tips: After each use, clean the wrench with a dry cloth to remove any dirt or debris. You can also apply a little bit of lubricant to keep the ratcheting mechanism working smoothly. Store it in a dry place to prevent rusting. Caution: Always make sure the wrench is properly engaged with the hardware before applying force to avoid slippage and potential injury.