The Streamlight® TLR-1 HL® Weapon Light gives you maximum illumination to identify threats. The unbreakable, scratch-resistant, gasket-sealed lens is engineered to produce a concentrated beam along with optimum peripheral illumination. The wide, side-to-side beam performs like a floodlight to illuminate and eliminate dark corners with bright, revealing light. Easily mount the durable, anodized aluminum housing using a spring-loaded thumb screw that adjusts to different rail variations. The ambidextrous on/off switch includes a strobe function for either signaling or disorienting.