Quick Release 20mm Weaver Picatinny Rail Mount for Tactical Flashlight Torch Laser Quick Release Lever allow fast installation & detachment Suitable for 25mm (1") Tactical Flashlight & Laser Sight Tube Mounting Need Also it is great for use for tactical flashlight or Laser sight Fully adjustable with nuts & screws included,Complete solution for Mounting Tactical Flashlight & Laser Sight on Rifle Lightweight, Shock absorption ability,Install on all 20mm Weaver Rail, Scope Rail & RIS Rails