Using your Toolzone SP128 flexible head ratchet wrench set is a breeze. First, pick the right size wrench from the set according to the nut or bolt you need to work on. Insert the wrench onto the fastener and use the ratcheting mechanism to turn it. You can use these wrenches alone or combine them with open - ended or combination spanners to get the job done faster. When using, make sure the wrench fits snugly on the fastener to avoid slipping and causing injury. Store the wrenches in the provided storage case after use to keep them organized and protected. To maintain the set, wipe the wrenches with a clean cloth after each use to remove dirt and debris. Every now and then, apply a light coat of lubricant to keep the ratcheting mechanism working smoothly. Remember, the set comes with a 1 - year manufacturer warranty, so if you encounter any issues, reach out to the manufacturer for assistance.