Usage Tips:PRODUCT PARAMETERS:The size of this wire numbering marker is 1.5mm: approx. 3.1*2mm / 0.1*0.1in, 2.5mm: approx. 4.8*3mm / 0.2*0.1in, 4mm: approx. 6*4mm / 0.2*0.2in and 6mm: approx. 7.2*6mm / 0.3*0.2in PRODUCT FEATURES:The clip-on design is simple and convenient to use, saving time and effort. The cable markers can mark the color-coded cables to make it easier to identify the cable PRODUCT DESCRIPTION:Fine workmanship and precise size can be used to fix cables. The colors are bright, very conspicuous and easy to identify EXCELLENT PERFORMANCE:This digital tube cable marker set is made of high quality plastic, it is durable and has a long service life BUY WITH CONFIDENCE:We guarantee you have a good shopping experience. Please feel free to contact us at first if there is any problem,and we are always here to support you