The 1-inch QD Scope Mount uses a highly refined quick-detach lever, offering the smoothest functioning QD on the market with an excellent return-to-zero. Tool-less multi-facetted adjustment nut provides the exact tension required and may be adjusted to fit rails not machined to MIL-SPEC tolerances.Features: The smoothest functioning QD lever on the market Patented QD lever by Elite Defense Precision machined Optimum return to zero performance and reliability Hardcoat anodized 6061 aluminum Compatible with objective bells up to a 56mm Overall length: 5.875" Ring width: 0.85" Ring distance: 2.80" Offset: 1.40" Height: 1.415" Weight: 8.1 ozMidwest Industries is a quality manufacturer of tactical weapons accessories. Their goal is to manufacture the highest quality parts at affordable prices backed by a lifetime guarantee.