The Phoenix Contact 0810892:0004 is a high-quality marker pin designed for efficient labeling in industrial automation systems. Each package contains 100 identically printed white marker pins, each labeled with the number "4," and is specifically crafted to fit terminal blocks with a width of 4.2 mm. Ideal for organizing and identifying connections, these marker pins ensure clarity and precision in complex wiring setups. Although temporarily out of stock, they remain a crucial component for streamlined terminal block management.