The TB05X12EWT-AB1 Terminal Block Markers are constructed of a continuously molded, flexible polymer material. The elastomeric material accepts continuous thermal transfer print using the TDP43ME printer. The markers are resistant to scratching, smearing, and rubbing. No tools needed to install or remove. For use with Allen-Bradley 1492-J3, 1492-W3, and Weidmuller WDU 2.5 terminal blocks. 0.19" x 0.47" (5 mm x 12 mm). Color White. 1000 markers/roll. 1 roll/package.