Description Made from durable 6061-T6 aluminum, the Sightmark 34mm Medium Height/High Height Weaver/Picatinny Rings are the perfect accessory to secure a shooter’s most trusted riflescope. With a matte black, non-reflective finish these lightweight rings are constructed to fit both Weaver and Picatinny rails. These Sightmark rings fit 34mm riflescope tubes and come packaged with a hex key for easy adjustments. Included in Package Weaver/Picatinny Mount Hex Key Features Made from durable 6061-T6 aluminum Matte black, non-reflective finish Fits both weaver and picatinny rails Fits 34mm riflescope tubes EXPORT CONTROL NOTICE: This product is controlled for export and in-country transfer under the Export Administration Regulations (EAR). division contrary to U.S. law prohibited. Specifications Mount Type weaver/picatinny Diameter, Ring 34mm Material Aluminum 6061-T6 Centerline Height 29.7 / 1.17 mm / inch Torque Spec for Mount Hex Nut 120-140 in-lbs Torque Spec for Socket Head Screws, in-lbs 19-22 Total Weight, (pair) ,oz. 12 or 12.5