The smoothest functioning QD lever on the market; Superior clamping that will not damage or coin the rail surface; Extremely smooth in operation with a multi-facetted adjustment nut to get the exact tension required by the operator; Fully adjustable with no tools required, can be adjusted to fit rails not machined to mil-spec tolerances; Precision machined for optimum return to zero performance and reliability; Hard coat anodized 6061 aluminum for a lifetime of service; Patented QD lever by Elite Defense; 100% made in the U.S.A.; Weighs only 2.0 oz.