This handy, super-simple device helps ensure your scope's crosshairs are properly indexed with the center of the bore so you'll get the most accurate performance from your rifle and scope. The two-piece system easily attaches to the scope and uses a standard bubble level to indicate proper alignment. Works great for optics mounted on rifles, handguns, and shotguns, so whatever you're shooting today, this tool will have you range-ready in seconds! It's simple, clean design makes it easy to align your scope's reticle with your gun. No more guessing, no more frustration, and no more hassle. The Tactical Reticle Leveler does the job better, faster, Mfg: Straight Shot