This document provides information about computer hardware tools used in computer system servicing. It defines various tools categorized as ESD, hand, cleaning, and diagnostic tools. Examples are given for each type of tool along with descriptions of their proper uses and safety procedures. The objectives and terms are also defined. Interactive portions provide questions to test understanding of identifying different tools from images and their uses. Activities at the end instruct the learner to choose 5 tools to describe their uses and how to use them safely.