Ardokit 100 Feet/30 Meter 3/16inch/4.5mm I.D Polyolefin 2:1 Heat Shrink Tubing Tube by Lucksender It is suitable for a wide range of applications, including electrical insulation, strain relief, cable bonding, color-coding and identification. Friend, please contact us if you receive the different specification item, and we will try our best to solve this problem, thanks.