Streamlight's Tactical Holster features a spring loaded interior wall that holds the flashlight in place and compensates for different body diameters. It can be inverted; the flashlight will stay in place due to the spring-loaded wall. Made with lightweight, super-tough nylon construction. Only compatible with: ProTac HL, PolyTac, PolyTac X, PolyTac X USB, PolyTac HP, TL-2, TL-2X, Strion LED, Strion HL, Strion DS, NightCom, NightCom UV, Twin Task 2L (lanyard removed), Scorpion X, Scorpion LED. Not compatible with Scorpion HL.