Bloodsport designed the Deadline broadhead specifically for today's high-performance crossbows. The mechanical broadhead easily handles crossbows' top speeds, while still maintaining the lowest amount of drag for supreme down-rage accuracy. On impact, the blades open with minimal energy loss to carve two-inch thick entrance holes for a swift, clean kill. Designed specifically for high-speed crossbows tested to 500 fps 38 percent less drag than competitors Fully deploys on impact and won't open in flight Guaranteed to cut no matter what 2 in entrance holes No rubber bands or O-rings 420 stainless steel blades with .040 in blade thickness