"The new Killzone is a 2 blade rear-deploying broadhead that packs a devastating 2 in " cutting diameter. The field-point accurate Killzone uses NAP's unique spring-clip design which ensures your blades won't open in flight or in your quiver. There are no o-rings or rubber bands to worry about. The Killzone is available in three different models including a cut-on-contact tip, a bone-crushing Trophy Tip, or the Deep Six compatible model. No matter which version you choose, the Killzone ensures that you will always Hunt with Confidence."