The GG&G One Inch Mounting Ring for tactical lights provides an inexpensive yet rugged dovetail mounting interface for flashlights or other small accessories. ONE INCH FLASHLIGHT MOUNTING RING SPECIFICATIONS: Easy-to-install by using a standard flathead screwdriver. The Ring securely holds the light with 2 screws and a J hook top strap. Material-J-Hook Strap: Steel. Weight: 1.3 oz. Material Base: 6061 T-6 billet Aluminum Finish-Aluminum Base:Type III hardcoat anodized finish matte black per mil-spec. Finish:-Steel Components: Manganese phosphate coated matte black to meet mil-spec. Lifetime Warranty. Made In America By Men And Women Proud To Be Americans!