NuFletch Ignitor Crossbow Nock Universal Flashing 3 pk. Green. 285 .295 and .300 diameter bolts. No adapters needed select and install the Swiss turned insert for your bolt place the LED battery light into the half-moon or flat nocks provided. Nock centering is automatic for unmatched accuracy. LED battery light replacement takes seconds. Package Contents: NuFletch Ignitor XBow Nocks NuFletch INGT-UNIV-X-GRN-FL: Ignitor Crossbow Nock Universal Flashing 3 pk. Green