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20Pcs Black AA Battery Sleeve PVC Heat Shrink Tubing Wraps Length 53mm Width 23mm Colorful Choice (20Pcs, Black)
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Amazon.com: LampVPath 6PCS 18650 Battery Protective Sleeve, 18650 Battery Spacer, 18650 Battery Holder Converter for 18650 Battery (Batteries are not included) - 6 Pack : Electronics
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