This clip quickly attaches with a removable, swiveling clip. For use with the IST Pak-Lite flashlight only. Rubber housing to hold flashlight or other accessories. When used with a flashlight and clip is removed, housing may be held between the teeth for hands free operation. ousing is sized for Pak-Lite flashlight, so the housing will hold one 9 volt battery. The Pak-Lite mounts on the front of a 9 volt battery.