Thomas & Betts WM-0 Wire Marker Books

The WM-0 book is a single-character book: it carries 460 markers, all of them the numeral 0. If you need a full numeric range for panel or circuit labeling, you order the matching books for each digit rather than getting a mixed assortment in one book.

Order multiple is 10, so the WM-0 ships in multiples of ten books (10 per inner package). A case quantity is 240. For an MRO crib stocking all digits, that means ten books of each character per line item.

The marker material is an all-purpose vinyl coated cloth tape made to resist abrasion, oil, water, and dirt, so it suits panel rooms, pump rooms, and mechanical spaces rather than clean-office-only use. The book cover also keeps the unused cards clean while it rides in a pocket.

Yes, the WM-0 wire marker book is listed as RoHS compliant, which covers the usual restricted-substance language on public and healthcare procurement specs.

A book like the WM-0 is for field marking: you peel a vinyl cloth marker and wrap it on a conductor that is already terminated, so it works for retrofit panel work, troubleshooting, and as-built corrections. Heat-shrink sleeving has to go on before the lug or connector, which makes it a pre-fab or new-install choice. For adding or fixing labels in a live panel, the wrap-on book is the practical option.

Each book is 3 x 5-1/2 inches, pocket size, with 10 pages of markers behind a cover. It drops into a shirt pocket or pouch without a case.

It is sold each, meaning one book per unit, with 10 pages of marker cards inside and 460 individual 0 markers total. Quoting and receiving are done in books, not in cards.