Weaver Thumbnut Tactical-Style Scope-Mounted Picatinny Adapters (1-inch)Crafted from lightweight, aircraft grade, 6061 T6 aluminum, with a durable, black matte, anodized finish, this accessory mount installs directly onto the tube of your scope, providing a mounting platform for flashlights, laser sights, or other gear. It mounts securely to a 1 inch or 30mm scope tube to provide a platform for accessories. Aircraft grade 6061 T6 aluminum is used for construction, to reduce weight and increase strength.