shrinkable tube - SODIAL(R) 5 x PVC Heat Shrink Tubing Wrap 29.5mm Flat 2m for 18650 18500 Battery Material: PVC; Net Weight: 70g Package Content: 5 x PVC Heat Shrink Tubing; Main Color: Lilac; Flat Width: 29.5mm/1.2" Round Diameter: 18.5m/0.73"; Thickness: 0.1mm Shrink Temperature: 80C; Shrinking Rate: 48% Fit for: 1 x 18650 Battery; Each Length: 2m/6.5ft