The Magnus Stinger Four Blade couples the powerful performance of the two-blade version with an exclusive Bleeder Block to lock in the 3/4" bleeder blades. Precision machined from knife-grade stainless steel and sporting an aircraft aluminum ferrule, Magnus Stingers fly true out of the fastest bows. The diamond tip gives extreme strength for bone-splitting penetration. Resharpenable, replaceable main blade and bleeder blades. Per 3