Primary Arms SLx Flip-To-Side Magnifier Mount 2 Bolt Interface Black. 41 inches above the top of the picatinny rail. Additionally it includes spacers allowing for a 1.535'' and 1.64'' centerline height so you can easily line it up with your optic. It features a low profile design manufactured from 6061-T6 aluminum with two steel alloy crossbolts that apply up to 55 in-lbs or torque to ensure a rock solid mount. This magnifier mount also utilizes a direct bolt system to interface with the magnifier instead of a traditional ring design in order to save weight increase strength and eliminates the possibility of the magnifier slipping or twisting in the mount. Specifications for Primary Arms SLx Flip-To-Side Magnifier Mounts: Manufacturer: Primary Arms Color: Black Fabric/Material: 6061-T6 Aluminum Quantity: 1 Finish: Hardcoat Anodized Features of Primary Arms SLx Flip-To-Side Magnifier Mount: 6061-T6 Aluminum construction Hardcoat anodized Standard 1.41'' optical centerline Includes spacers for 1.535'' and 1.64'' heights Compatible with direct bolt-on style magnifiers Dual crossbolts made from steel alloy Low profile and lightweight at 2.5 ounces Package Contents: Primary Arms SLx Flip-To-Side Magnifier Mount Primary Arms SLx Flip-To-Side Magnifier Mount 2 Bolt Interface Black 910094