Beman Micro Effect Bone Collector: * Boasts Beman"s patented micro-diameter carbon construction * Tough and durable, reduced diameter high-strength carbon means increased use on the range and success in the field to deliver unbeatable higher power and performance, for all types of heavy boned big game * The arrow of choice for Bone Collectors everywhere, this powerful MFX offers a hard-hitting mix of accuracy, durability and penetration * Features micro-diameter MFX carbon construction * Weight tolerance: +/- 2 grains * X Nock installed * HIT inserts included * ViBrake X Nock sold separately