The clamp screw for the TLR-1 / TLR-2 Streamlight® lamp is designed for the popular lamps TLR-1 and TLR-2 of Streamlight®'s production. The screw will allow you to attach your lamp to any pica bar (MIL-STD-1913). When tightened, the bolt guarantees stability of the lamp on the weapon.The fastening bolt can be easily tightened or released, so you can move your flashlight from one weapon to another in a matter of seconds.