Thorn Expandable Broadheads uses patented â??hidden bladeâ?쳌 technology to achieve true field-point accuracy. At impact, the Rip-Tip delivers bone-crushing penetration and deploys the hidden blades creating a huge 1 3/4 Inch wound channel. Includes (3) Thorn Expandable Broadheads, (6) Sheer Pin and (1) Practice Clip.