Lumenok Signature Single Orange. The Lumenok (lighted arrow nock) is fast becoming the most popular lighted nock on the market. The Lumenok is a lighted uni-nock and adds only 22 grains of weight to your arrow. Simply remove your nock and put in the Lumenok and you are ready to go. The Lumenok Signature fits .245 ID shafts. PSE: Carbon Force radial X. Easton: Lightspeed, Powerflight, Fatboy, XX75, XX78, Eclipse, Cobalt. Carbon Express shafts: Terminator, Maxima, CX Hunter, Heritage. Carbon Impact: Fat shaft. Victory Arrows: V-force, X-ringer.