Internal Dental Anti-SlipThis numbered tube adopts C-type concave design, firmly fixed on the line you need to arrange and not easy to fall off. Dual-Use Plug-inDesign Snap, no need to worry about the simple and convenient operation of the cable with the crystal head or the terminal installed. Clear WritingHigh quality hot stamping, strong environmental adaptability and excellent resolution of the characters for long-term use, not easy to fade. 10 Colors10 colors represent 10 different numbers. When in use, the jumpers are better distinguished to identify each data line and network cable, which greatly reduces working time and improves efficiency for personnel to check and repair later.