Add another storage option to your NODSBAK setup with an additional interchangeable sleeve. Each sleeve is designed to fit the NODSBAK-NP system and can be swapped out based on the batteries, equipment, or small items you need to carry. This listing is for the sleeve only and does not include the NODSBAK body, mounting hardware, or other accessories. Available Sleeve Options Choose the sleeve configuration that best fits your setup: 18650 batteries fit directly into the Nodsbak housing CR123 battery sleeve CR2 battery sleeve AA battery sleeve AAA battery sleeve 20 mm coin-cell battery sleeve Counterweight/storage sleeve Additional configurations may be available as options are requested/ developed The counterweight/storage sleeve can be filled with your preferred counterweight material or used as a compact storage container for small equipment. Compatibility These sleeves are designed specifically for the NODSBAK-NP system. Select the correct sleeve option before adding the item to your cart. Important Information Battery fitment may vary slightly between manufacturers. Please contact is if you have issues with your Nodsbak sleeve tolerances. The 20 mm coin-cell sleeve is designed for commonly available 20 mm batteries up to approximately 4 mm thick. Proudly designed and manufactured in San Diego, California. 4 BARRELS, COMPLETELY CUSTOMIZABLE.