PWC-PK-1 is a write-on self-laminating wire and cable marker designed for identification and labeling in electrical and telecommunications applications. The marker features a transparent over-wrap that provides a snug fit and self-laminating shield, offering protection against oil, water, and solvents. Constructed from vinyl material (B-292), each book contains 120 markers with dimensions of 0.750 x 1.750 inches (19.00 x 44.40 mm) and a write-on area of 0.750 x 0.500 inches (19.00 x 12.70 mm). These markers are compatible with Brady's labeling pens and other standard markers, making them suitable for both above-ground and below-ground applications where durable, weather-resistant identification is required.