Check the listing for details. Lumenok Lighted H Nock Green 3 Pack. Color: Green, Condition: New. Listed at 30.42 USD. Lumenok Lighted H Nock Green 3 Pack The Lumenok H is made to fit .233" ID carbon arrows. Battery retention components allow the battery to be changed easily for the brightest operation possible. With the Lumenok H in your arrows, you will never fail to see shot placement. Let the Lumenok help you tune your equipment and your shooting skills. Features • The Lumenok is a lighted arrow nock used for shot placement recognition & arrow retrieval. • Lumenok H fits .233” ID shafts * Each Lumenok is equipped with a replaceable battery Approved Models Per Manufacture * Easton: ST-Epic, ST-Carbon Excel (Made with Easton H nock) NOTE: Lumenoks work best with All carbon shafts. Performance with carbon wrapped shafts is marginal. Note* All Burt Coyote Lumenoks are warrantied by Burt Coyote Company for performance & Defects. Consumers must contact the Burt Coyote Company for all returns, No Exceptions. Mfg Number: H3GWARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.