The Agastat 7000 series STD21Y-A is a durable black Snap-On marker designed for easy and efficient cable identification. Featuring a straight marker cut, it is compatible with cables ranging from 11 to 15.5mm (.433 to .61 inches) in diameter. The STD21Y-A offers a convenient solution for labeling wires in various applications, meeting the need for clear and reliable identification in industrial settings. Perfect for organizing and distinguishing cables, this marker ensures efficient maintenance and troubleshooting. With its high-quality construction and practical design, the STD21Y-A is a must-have for any professional in need of top-notch cable marking solutions.