Burt Coyote Lumen-Arrow 100% Carbon Bolts -- Lumenok GTF Equipped 20 Bolts with Flat Nock -- 3 pack. Weight -- 321 grains without user supplied point. We use a 92 grain brass insert for improved FOC. Complete Lumenok equipped bolts, ready to shoot, just add a point or broadhead. Bolts are 20 long with three 2 Bohning Blazer vanes OR three Bohning 3.5 X-Vanes. (Vane colors may vary from those pictured.) These bolts are .300 on the ID. Each is equipped with a Lumenok GTF. Use Lumenok RBS replacement battery.