The WAGO 793-5518 WMB marking card is a crucial accessory for organized and efficient terminal block management. Designed for horizontal marking, this snap-on card allows for clear and consistent identification of terminal blocks in industrial settings. The card is stretchable, accommodating a range of terminal block sizes, and comes pre-assembled with 10 strips, each containing 10 markers. This ensures a readily available supply for labeling needs, contributing to streamlined processes and reduced errors in electrical installations and maintenance.