Never settle for a hit and run. We have no hesitation saying the F4 is the most accurate fixed blade broadhead on the market today. This 4-blade, all laser-welded stainless steel broadhead delivers time and time again with its 27-degree razor-honed blade angle, producing a 1. 350" cutting diameter and a 3. 350" cutting surface. The F4 doesn't settle for “almost. " Enter the Core.