The uni-ball Uni-Paint PX-20 Oil-Based Medium Point Marker set, part number UBC 63631, provides a permanent marking solution for diverse industrial and business applications. This set includes 12 markers with oil-based, opaque paint ink, designed to create vibrant marks on both light and dark surfaces. The medium bullet tip allows for consistent line work. These markers are suitable for use on materials such as glass, wood, ceramics, china, leather, and cement, offering broad utility across maintenance, inventory management, and facility operations. The ink is formulated to be fade-resistant, water-resistant, and abrasion-resistant, ensuring durability of markings in various environments. The acid-free composition further contributes to the longevity of the marks. This product is intended for IT and operations buyers seeking reliable, multi-surface permanent markers for professional use.