"Razortip Technology Solid stainless steel ""No O-Ring"" design Maximum damage Superior penetrationGrim Reaper Broadheads uses Razortip Technologya patented mini-tip blade(s) that greatly enhances penetration. Sharp as darts, and solid stainless from the tip of the cut-on-contact, bone-splitting ""Trocrazor II"" tip to the solid stainless blade-locking ferrule. Features original ""No O-Ring"" design and shock absorbing blade spring to assure superior penetration with no deflection from any angle. Shaft and tip are engineered to extend far enough to provide start-up penetration just before blades arrive for true trajectory after impact and maximum follow-through damage."