WSB QUICK MARKING SYSTEM ( 209-545) effortlessly organizes your terminal blocks with precision. This white marker, part of the 209 series, features a 5mm wide snap-on design with black horizontal symbols for clear identification. Not only is it halogen-free and RoHS compliant, but it also boasts a UL 94V-2 flammability rating for added safety. Perfect for Barrier Strip Jumpers, Covers & Markers, as well as Barrier Terminal Blocks, Strips & Accessories, this accessory ensures efficient and reliable connectivity in any application. Upgrade your marking system with the WSB QUICK MARKING SYSTEM today.