Estone&reg; 150pcs 2:1 Black&Red Polyolefin Heat Shrink Tubing Tube Sleeving Wrap Wire Kit Big collection of heat shrink tubing, 8 Specifications, 2 colors Supplied internal diameter: 2.0mm,2.5mm,3.5mm,5.0mm,6.0mm ,8.0mm,10.0mm,13.0mm minimum, Fully shrunk internal diameter: 1.0mm,1.25mm,1.75mm,2.5mm,3.0mm,4.0mm,5.0mm,6.5mm maximum Color: red, black Specifications: 8