Delivering increased kinetic energy for extreme knockdown power, making them ideal for big game hunting, Ravin XK5 20" Carbon Crossbow Bolts are the most premium arrows Ravin offers - featuring an incredible straightness tolerance of .001 (inclusive of 100-grain field tip or broadhead) so they're true to target as determined solely by the hunter's acumen. Features3-PACK500 GRAIN (WITH 100 GRAIN FIELD TIP- NOT INCLUDED)100% PURE CARBON CONSTRUCTIONSTRAIGHTNESS TOLERANCE: .001"HIGH-IMPACT BRASS THREADED INSERTS2" HIGH-PROFILE OFFSET VANESHIGH-IMPACT ALUMINUM NOCK BUSHINGSRAVIN-ENGINEERED POLYMER NOCKS