Magnus Stinger Killer Bee Replacement Blades for 2-Blade or 4-Blade Broadheads. These are the replacement blades ONLY. Each pack contains 3 blades. The Magnus Stinger Killer Bee line of broadheads possesses outstanding flight from the fastest bows on the market and unmatched quality in construction, the Stinger is the only choice when every shot counts. The main blade can be replaced... or you can resharpen them if you prefer, and each Stinger broadhead carries the Magnus Lifetime Guarantee.