The Spartan was developed from taking the best characteristics from larger 19/64" and smaller 17/64" arrows. We wanted the Spartan's outside diameter to be small for maximum accuracy and penetration. However, like larger arrows, we wanted the 100% carbon Spartan to utilize an insert for easier arrow removal and to reinforce the front of the arrow for bone-shattering impacts. Sold in a pack of 6; with a custom North Mountain Supply thick paper replacement archery target that is 17"x23". Does not include points, they are sold separately.