The PWM-PK-8 is a B-500 Vinyl Porta-Pack® wire marker book, providing a convenient, pocket-sized solution for labeling wires and cables. This book contains 10 pages of markers with a comprehensive set of legends. It includes four markers for each number from 16 through 90, and two markers for each letter from A to Z, as well as the symbols (+), (–), (/), and (0). The repositionable vinyl cloth material and slim form factor make it easy to carry and ensure the necessary markers are always available for various electrical identification tasks.