Battery Holder Holder

Battery holder holder for holding four single holders in case for easy mounting. This battery holder holds 18650 batteries and fits perfectly with these holders on Amazon. 3d printed it standing up with supports. Battery holder snaps in place and doesn't come out so easily. https://www.amazon.com/gp/product/B00LSG5BKO/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1