Slash Magnum Arrows are specifically designed for big game. With a full body outsert for the broadhead and INsetBlade assembly, these cored body carbon arrows with a 300 plus spine feature Slash Momentum Driven Performance (MDP), giving hunters the added edge of down range penetration. ID .204, OD .264, GPI 13.2, Spine 300. Same overall weight as the hunting arrows. Fletched with 2 Inch Blazer vanes.