Allen Carbon Arrow Nocks/Inserts 12 Pack Green. Installs easily with a small amount of Nock glue and align to your desired position. Inserts fit popular arrows like Allen Pro Eastman Outdoors Carbon Express Wolverine Terminator Terminator Lite PSE Carbon Force Arrow Dynamic Plainsman Black Hawk Vapor and Carbon Tech arrow shafts. Includes 6 aluminum inserts and 6 nocks. Features of Allen Carbon Arrow Nocks friction fit design string end of the nock is designed to grip the string Fits Allen Carbon Express Gold Tip and other Arrows with 9/32in diameter shaft Friction fit can be used without glue lightweight & durable Package Contents: Allen Carbon Arrow Nocks Allen 68400: Carbon Arrow Nocks/Inserts 12 Pack Green