The Scalarworks LEAP/09 1.57" scope mount is a new type of lightweight and durable one-piece scope mount . It features a 34mm tube and a height of 1.57". The offset is 2". The mount is openwork, made of 7075-T6 aluminum and tilted forward which reduced the weight. Coating with anodizing and black nitriding increased resistance to scratches and light reflections. The edges have been rounded so that they do not snag on components. The mount uses the ClickDrive™ QD system with additional pulling projections for added stability. The mount is designed for shooters looking for the lightest, low-profile mount on the market.Scalarworks LEAP/09 mount features:Rugged, one-piece construction from a block of milled 7075-T6 aluminumPicantinny rail quick release mounting systemProtective coating (anodizing, nitriding)Tapered, non-hooking edgesLow weight and compact dimensionsClickDrive™ QD mounting systemScalarworks mounts feature the patented ClickDrive mount. It allows quick assembly/disassembly with screws that clamp onto the rail, and a ball-lock prevents the mount from unscrewing on its own during shooting. This solution eliminates the need for screws and tools to screw the mount on. Specifications:Rails MIL-STD-1913 Picatinny Materials 7075-T6 Aluminum / 4140H Steel Finishes Type III Anodizing / Flash Nitride Center height over rail 1.57"/40mm Ring diameter 34mm Cant 0MOA Overhang 2.0" Weight Approx. 160 g Origin United States of America