How to use: Just insert the Phillips #00 tip of the screwdriver into the screw head and turn it clockwise to tighten or counter - clockwise to loosen. Note that you should use the right amount of force to avoid stripping the screw. When not in use, keep it in a dry place to prevent rust. Clean the blade with a dry cloth after each use. That way, your iFixit Phillips #00 screwdriver will last you a long time.