Albertu 20'' Carbon Crossbow Bolts Hunting Archery Arrows with Replacement Screw-In Field Points (Pack of 6) Length:20",Shaft diameter:5/16".Weight:25grams/pcs Heaviest carbon crossbolt in CX lineup that creates maximum kinetic energy and great knock-down power Matched with 100 grain stainless steel bullet tip perfect for hunting/targeting practice Advanced construction ensures spine consistency for greater accuracy These arrows provide maximum accuracy and penetration.Includes field points and moon nocks