Maratac Delrin 18650 Battery Lockers, Waterproof Black, A044

Fits Standard 18650 Cells or 2 x CR123 Batteries & lip balm tube too
Delrin® is a lightweight, extremely stable space age polymer.
Overall length: 84.50 mm or 3.35"
External diameter: 23.8 mm or .94"
Internal opening: 19.45 mm or .78"
Internal depth: 70.25 mm or 2.75"
Weight 21.5 grams
Lid is secured via flange to cap seal internal o-ring)
U.S. Made / U.S. Issue Item
SPO : 441778 / DLA
Only put stable lithium cells in tube