"Built for hunters looking for speed, ultra-flat trajectory, and maximum long-range consistency, Carbon Express Mach 5 5mm Hunting Arrows offer exceptional downrange velocity without sacrifice. Carbon Express' fastest arrow to date, the Mach 5 arrows deliver exceptional downrange velocity with stability and forgiveness even when pushed to extreme distances. Made of an advanced carbon matrix and featuring Carbon Express' 360 Spine Consistency, these ultralight arrows still give bowhunters great launch behavior and broadhead control. A great arrow choice for hunting, TAC-style events, and long-range target practice. Comes with Bulldog nock collars and 5mm aluminum sleeved 2-piece 40-grain inserts. Fletched with Bohning Alpha vanes. Straightness: .002"". Weight Tolerance: 1.0 grains. I.D.: .204"". Advanced, small-diameter bowhunting arrows built for speed Advanced carbon matrix construction - speed without sacrifice 360 Spine Consistency - consistent arrow reaction shot after shot Bulldog nock collars 5mm aluminum sleeved 2-piece 40-grain inserts Fletched with Bohning Alpha vanes Straightness: .002"" Weight Tolerance: 1.0 grains"