"Strong, durable, and accurate, Muzzy Merc 3-Blade Fixed-Blade Broadheads gives bowhunters a replaceable blade design with a big cutting diameter. This technically advanced design combines a precision stainless steel ferrule with a failproof aluminum blade retention collar to hold the Merc's razor sharp .030"" blades in securely. Cut-on-contact tip for deep penetration. Big 1-1/8"" cutting diameter delivers large blood trails for quick and efficient kills.Manufacturer model #: 281. Deadly effective 3-blade broadhead Precision stainless steel ferrule with cut-on-contact tip for deep penetration 3 razor sharp .030"" blades failproof aluminum blade retention collar locks blades in Big 1-1/8"" cutting diameter"