Nockturnal FIT Universal Size Lighted Nock Red/Blue Strobing 3/pk - NT-310

String-activated lighted nock with strobing red and blue LED lights designed to fit nearly all hunting arrow types, including X-diameter and GT S/H arrows with included adapter sleeves. Features impact-resistant polycarbonate construction with lithium battery providing 20+ hours of runtime. Three-pack includes three sets of nock collar adapter sleeves for universal compatibility.