530 Pcs Heat Shrink Tubing Tube Sleeving Wrap Cable Wire Material: Polyolefin 5colors, 8 Specifications, 530pcs 5 Color: Yellow, Blue, Black, Green, Red Supplied internal diameter: 1.5mm, 2mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm Shrinkage Ratio: 2:1 (will maximum shrink to 1 / 2 of its supplied diameter )