Can be shot as a pull-thru or relax tension release;Thumb and index levers for holding and firing depending upon the release mode;Open jaw head design;Micro-adjustable tension The X-Tension R/T can be shot as either a pull-thru or relax tension release. For pull-thru, adjust the release to fire at five pounds over your holding weight at full draw. The thumb and index finger levers hold the release from firing on draw. For relax tension, relax the thumb and index levers to fire.