Easy to Identify: The cable marker tube features 0-9 numerical markers and nine different colors for differentiation, allowing you to quickly find the cables you need to pass through the data cable. It can meet your work needs. Accurate size: The color is bright, very eye-catching, and easy to recognize. Fine craftsmanship and precise dimensions can be used to secure cables. 1.5mm: approx. 3.1x2mm / 0.1x0.1in. 2.5mm: approx. 4.8x3mm / 0.2x0.1in. 4mm: approx. 6x4mm / 0.2x0.2in. 6mm: approx. 7.2x6mm / 0.3x0.2in. Application: 0.75-1.5mm Applicable diameter: 2.0-3.2mm, 15 pieces/piece, a total of 10 pieces, numbered 0-9. 2.5mm Applicable diameter: 3.0-4.0mm, 10 pieces/strip, a total of 10 pieces, quantity 0-9. 4mm Suitable for wire diameter: 4.0-5.5mm, 10 pieces/piece, a total of 10 pieces, quantity 0-9. 6mm Suitable for wire diameter: 6.0-7.0mm, 10 pieces/piece, a total of 10 pieces, quantity 0-9. Easy to Use: The digital card sleeve adopts a snap on design, which is simple and convenient to use, saving time and effort. Cable markers can mark color coded cables, making it easier to identify cables. High Quality Material: The colored cable marker is made of high-quality plastic, which is wear-resistant, durable, and has a long service life. Have a great time shopping!