Atension Hinge Derived from the Insatiable, this back tension release uses the R.A.S. Technology for precise adjustment. Ergonomic design provides maximum comfort and accuracy. It can be shot either with a D-loop or using the attached rope. Just wrap your fingers around it, settle on the X, relax your arm and tighten your back. Then listen to the crowd cheer after you nail it. Available in the Hinged or Spike version. ~Carter Enterprises