The Striker broadhead is a great breed of premium replaceable-blade broadheads. With a cut-on-contact all-steel design, scary-sharp Lutz blades, 100% spin-tested accuracy and our exclusive ANIX Blade-Locking System, this head prevails where another similar fixed-blade broadheads fail. 100% steel tough features a cut-on contact design 100% spin tested has an anix blade-locking system ultra-sharp 0.030 inch thick blades