uxcell 30pcs 72mmx18.5mm PVC Heat Shrink Tubing Purple for 1 x 18650 Battery Country of Manufacture: CHINA; Material: PVC; Net Weight: 14g Package Content: 30pcs x PVC Heat Shrink Tubing; Brand: DMiotech; Main Color: Purple Battery Included: No; Shrink Temperature: 80C; Shrinking Rate: 48+/- 5% Fit for: 1 x 18650/18500 Battery; Each Length: 72mm/ 2.8inch; Temperature Range: -40C to +105C Flat Width: 29.5mm/1.2inch; Round Diameter: 18.5m/0.73inch; Thickness: 0.1mm (before shrinkage)