These are precisely machined titanium coins with a phosphorescent powder filled glass vial in the middle. Put them in your ar stonk, in your pistol grips, on your personal items etc. The photos may give you some ideas.
10mm in diameter and 2mm in thickness. Comes with double sided tape. Note: glass vial is shock resistant, will hold up to firearm recoil up to .338LPM. *Do not jab the vial with sharp object.*