"Adding chiseled serrations into the proven Black Hornet design, the Black Hornet Ser-Razor Broadhead from Magnus delivers Black Hornet performance with even greater blood trails. Diamond-shaped design combines razor sharp, knife-grade stainless steel blades with a strong tanto tip to deliver bone-splitting penetration on the biggest game animals. Designed to deliver more effective cutting after impact, the Ser-Razor's serrated edges produce greater blood trails for easier tracking and a quicker kill. Strong aircraft-grade aluminum ferrule is spin-tested within .002"" to ensure field point accuracy on every shot. 4 blades. Cutting Diameter: 1-1/4"". 3 pack. Manufacturer model #: BHSR100-4. Field tip accuracy, deadly penetration, chiseled serrations for bigger blood trails Spin-tested, aircraft-grade aluminum ferrule Razor sharp, knife-grade stainless steel blades Diamond-shaped design with a strong, bone-splitting tanto tip 4 blade design - 1-1/4"" cutting diameter"