Slingblade 4 is one piece ferrule mechanical broad head. This broadhead has a 2-3/16? cutting diameter diameter and 4 blades, providing massive entrance and exit wounds yet has a 7/8? flight diameter so it flies like a field point.Features:.031 thick ultra-sharp replaceable razor-sharp stainless-steel blades;Individually spin-tested for optimal down-range flight performance;Practice blades included;2 3/16" cutting diameter;100 grain