Using your Wera 334 slotted flat head screwdriver is easy. First, select the right size for your slotted screw. Then, insert the tip of the screwdriver firmly into the screw head. The smooth hard zones are great for quick turning, so you can spin the screwdriver fast to get the screw started. When you need more power to tighten or loosen the screw, use the soft grip zones for better torque transfer. Remember, this screwdriver has color - coding to help you find the right one easily. As for maintenance, after each use, wipe the screwdriver clean with a dry cloth to remove any dirt or debris. Store it in a dry place to prevent rusting. Avoid using it on screws that are too large or too small for the tool, as this can damage the tip. If you notice any damage to the tip or the handle, stop using it and consider getting a new one to ensure safety and proper performance.