Fits Pelican Steathlites, Brightstar 4AA, UK 4AA models, Streamlight Scorpion and Streamlight 2AA series.
Fits all Streamlight Polymer 4AA series lights.
Fits Streamlight PolyTac series, Pelican M6 series and Surefire 6P and G2
Accommodate most round lights from 2AA, to Tactical size round lights using CR123A Lithium batteries
Accommodate virtually any helmet, and can be used with a wide variety of lights including 4AA, 3AA 2AA