New Archery Products Killzone Trophy Tip 125gr Expandable Broadhead - 3 Pack - The Killzone is a 2 blade rear-deploying mechanical broadhead that packs a devastating 2in 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. 2 Blade Rear Deploying Mechanical Broadhead Field Point Accurate No O-Rings Or Rubber Bands Devestating 2in Cutting Diameter Trophy Tip