How to use: Simply select the right TORX bit on the screwdriver for your screw. Place the bit into the screw head and hold the T - handle firmly. Use your hand to turn the handle clockwise to tighten or counter - clockwise to loosen the screw. The additional short arm can be used when you need extra torque. Note: Don't use excessive force that could damage the tool or the screw. Also, make sure the bit is properly seated in the screw head to avoid slipping. Maintenance: After use, wipe the tool clean with a dry cloth. Store it in a dry place to prevent corrosion. If it gets dirty, you can use a mild cleaner, but dry it thoroughly afterwards.