Offering crossbow hunters unrivaled efficiency, accuracy, and penetration, Axe Crossbows 17.5" Axe Micro Diameter Bolts 6-Pack help you maximize the performance of your Axe Crossbow. These micro-diameter bolts come outfitted with a durable, 6061-T6 aluminum nock and 3 Fusion XII SL vanes. 17-3/8" long (without point). 383 grains (with 100-grain point). ID: .166". 6-pack. High performance bolts for Axe Crossbows Micro-diameter arrows deliver great efficiency, accuracy, and penetration Outfitted with aluminum nock and 3 Fusion XII SL vanes