To dream of a power drill represents an ability or resource that allows you to achieve goals with little effort. Something that makes solving a problem easier or gives you a lot of control over a difficult situation.
To dream of power drill bits represents a variety options that you can use to easily solve a problem or comfortably keep something under control.
Example: A man once dreamed of being unable to find . In real life he felt unable to find an effective solution to a health problem. Nothing he did enabled to easily get control over his health.