3M SDR-2 Wire Marker Refill Preprinted Legend 2 Black on White

Wire Marker Refill for Professional Labeling

The 3M SDR-2 refill provides preprinted polyester film labels with a black legend on a white background. It is designed for electricians and technicians who need durable wire identification in commercial or industrial environments. The self-adhesive acrylic backing ensures secure attachment to wires ranging from 6/0 to 24 AWG. This refill works with the STD dispenser for efficient application on the job site.

Capacity and Temperature Performance

Each roll contains 576 individual markers measuring 0.22 inches wide by 0.003 inches high. The polyester material operates reliably across a temperature range of -40 to 250 degrees Fahrenheit. This capacity suits large wiring projects, though the fixed legend limits flexibility for custom numbering sequences. Users requiring variable legends or larger label dimensions will need a different solution.

Build Quality and Daily Use

The polyester film back resists abrasion, moisture, and chemical exposure typical in panel building and maintenance. Acrylic adhesive maintains bond strength across the full temperature rating without oozing or lifting. The refill format minimizes waste by eliminating liner handling during repetitive labeling tasks. Compatibility is limited to the STD dispenser, so operators without that tool cannot use this product.