Using your Chapman Pocket Screwdriver Set is easy. First, select the appropriate bit for your job from the two Phillips and two flat bits provided. Insert the bit into the ¼' ratchet. The ball detent will hold it securely in place. If you need to turn the screw in the opposite direction, just flip the screwdriver over. When using, make sure to apply steady pressure to get the most out of the four - times - normal torque. As for maintenance, after each use, wipe the screwdriver and bits with a clean, dry cloth to remove any debris. Keep the set in a dry place to prevent rust. Avoid using it for jobs that are beyond its capacity, as this could damage the tool. Enjoy the convenience of this compact and powerful screwdriver set!