Introducing the WSB QUICK MARKING SYSTEM ( 209-612), a versatile accessory perfect for organizing and labeling your terminal blocks with ease. This snap-on marker in a sleek white color, part of the 209 series, features black vertical numbers for clear and efficient marking. With a width of 5mm, it fits snugly onto compatible terminals for a secure fit. Not only is this marker halogen-free and RoHS compliant, but it also boasts a flammability rating of UL 94V-2 for added safety. Ideal for barrier strip jumpers, covers, and markers, as well as connectors and terminal blocks, the WSB QUICK MARKING SYSTEM ( 209-612) is a must-have tool for any professional workspace. Stay organized and compliant with this reliable accessory.