Introducing the WSB QUICK MARKING SYSTEM ( 249-623) for efficient organization and identification of terminal blocks and connectors. This white marker, part of the 249 series, features a snap-on mating type for easy installation. With a non-stretchable yet flexible design, it ensures durability and longevity. Halogen-free and UL 94V-2 rated for safety, it offers peace of mind in any application. The black marking color and 5mm width allow for clear and concise labeling, with vertical marking direction and symbol type options available. Perfect for Barrier Strip Jumpers, Covers & Markers, and other terminal block accessories, the WSB QUICK MARKING SYSTEM is a must-have for streamlined connectivity setups.