Thank you for viewing! Brand new, unused heat shrink tubing specifically for 18650 lithium-ion batteries. Flat state: 30mm → Cylindrical: 19mm [Product] Heat shrink tubing 30mm x 100cm Other colors are here → #dp0010 If you have questions like "Which one is good for this purpose?", I have some recommendations based on past sales experience, so feel free to comment. [How to Use] ◾︎Place the tube over the item you want to protect and apply heat. ※Shrinks with heat from a hairdryer, heat gun, soldering iron, lighter, etc. After shrinking, it is waterproof and durable. [Examples of Use] Protection of fishing line / Making assist hooks / Repairing broken headphone cables / Protecting cables / Repairing the tips of shoelaces / Repairing the tips of hoodies. Also, it can be used for car wiring for car navigation systems, speakers, etc. / Radio control / Insulation of wire connection parts / Preventing broken smartphone charging cables / Covers for electrical plugs and connectors. [ #Bundle discounts available ] ◾︎If you wish to purchase other items I have listed (including items other than heat shrink tubing) in a bundle, you will receive a discount of -50 yen for each additional item. Please feel free to comment. ＊We plan to ship on the same day or the next day. [Shipping Method] ▶︎Regular Mail Regular mail does not deliver on weekends and holidays, so depending on the timing of shipment, it may take about 2 days longer than the original arrival time. We will ship as soon as possible if we are not out of the office, but delivery may take longer due to the above reasons, so if you are in a hurry, we will handle it with Rakuraku Mercari delivery (plus 99 yen). Feel free to comment. #DoppoHeatShrinkTube