Use as a high-quality alternative to ringmounts sold by firearms manufacturers. Because these rings are machined from solid steel, they offer superior integrity and tighter tolerances that are based on the proven cross-slot design. Use Leupold PRW bases or any other Picatinny-style mount rails. Available in low, medium and high Matte Quick release Weaver style mounts Rotate the levers to achieve a lock .8" high with Matte Finish Adjustable double-lever mechanism