Lumenok Lumen Arrow Crescent Crossbow Bolts 20in Black/Green. Weight - 321 grains w/Blazer vanes or 337 grains w/ X Vanes. 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 20in long with three 2in Bohning Blazer vanes or 3.5in Bohning X-Bolt vanes. (Vane colors may vary from those pictured.) These bolts are .300in on the ID. Each is equipped with a Lumenok GTC. Uses Lumenok RBS replacement battery. Specifications for Lumenok Lumen Arrow Crescent Crossbow Bolts: Manufacturer: Lumenok Color: Black/Green Length: 20 in Archery Application: Hunting Package Contents: Lumenok Lumen Arrow Crescent Crossbow Bolts Lumenok BECCXV3G: Lumen Arrow Crescent Crossbow Bolts 20in Black/Green