Uxcell a15060100ux0642 20 Pcs 18.5mm Dia PVC Heat Shrink Tubing Blue for 1 x 18650/18500 Battery (Pack of 20) Country of Manufacture: CHINA; Brand: DMiotech; Material: PVC Net Weight: 10g; Package Content: 20pcs x PVC Heat Shrink Tubing; Main Color: Blue Flat Width: 29.5mm/1.2inch; Round Diameter: 18.5m/0.73inch; Thickness: 0.1mm (before shrinkage)