ITEM NAME:5M Black PVC Heat Shrink Wrap Tubing 23mm Width for 1xAA Battery A1O8 5M Black PVC Heat Shrink Wrap Tubing 23mm Width for 1xAA Battery A1O8 Flame retardant, environmental protection, insulation, soft, stable performance, low temperature shrinkage, shrinking fast, etc. Can have the effect of anti-counterfeiting and decoration the packing materials, and the items were capsuled can have insulation, moistureproof, anticorrosive, the effect of dustproof, etc. Applicance: used for 1xAA Battery. Notice: To find the size you need, measure the widest cross-section circumference of your pack and then divide it by Use the shrink wrap size at least 5 mm (1/5 inch) wider than your half circumference value. Q: Does heat-shrink wrap make batteries hotter? A: The shrink is simply a cover to keep you from catching the edges of the cells on something in/on/around the plane and destroying your pack. When heating it, the temperature will increase in few seconds. In such short time, the heat will not transmit to the battery. Main Color: Black Fit for: for 1 x AA Battery Round Diameter: 14mm/0.55 inch Flat Width: 23mm/0.91 inch Thickness: 0.1mm Total Length: 5m Temperature Range: -55 Celsius to + 105 Celsius Shrink Temperature: 80 Celsius Material: PVC Rated voltage: 300V Shrinking rate: 48%(cross section)and 8%(longitudinal) Heating tool: hot air gun Net Weight: 30g Package Content: 1 x PVC Heat Shrink Tubing Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.