(SCOPE RINGS SPECIFICATIONS) Made of Aluminum, Matte black color, Includes 2 rings, , Overall Height: 1.735 inches, Overall Thickness: 0.825 inches, Overall Width: 1.620 inches ( measurement excludes the mounting bolt ), 1" internal diameter, Optic Centerline Height: 0.875, Weight: Approx 1.6 ounce per rings, Medium height profile will fit scopes with a bell housing up to 48mm, Fits Picatinny rails, Heavy-duty design with 4 bolts on each cap. Made to handle schock and recoil Will accept scopes with 1" tube diameter. The screw bolt also acts as a recoil lug to index across your rail systems cross slots and prevent movement of the scope ring. We recommend using thread locking compound ( not included ) on these rings in Heavy recoil applications (DOVETAIL ADAPTER SPECIFICATIONS) Made from Aluminum, Matte black color, 4" Approx Overall length. This adapter allows you to convert your 3/8" dovetail equipped rifle or marker to accept industry standard 7/8" Picatinny style scopes or accessories. Since Picatinny is an industry standard, with this adapter you will now be able to use a huge variety of accessories on your rifle. Easy bolt-on installation. These items are Brand New