The flashlight holster is able to carry most types of Olight, Fenix, Surefire flashlights. Tension adjustment is to hold flashlight barrel of 20-28mm in diameters.

Tension adjustment is to hold flashlight barrel of 20-28mm in diameters.
The tightness can be adjusted by manually tightening or loosening the screw without other Allen Keys or screwdrivers.