Xtra Performance Recurve Features: - New ultra high modulus carbon bar, 2x stronger, contains thicker layers of carbon - New wedge lock bow mount bracket is hands down stronger than any other (patent pending) - In-line tension adjustment allows the sight pin to stay on target from shot to shot - Stronger 10-32 windage lead screw - Enlarged diameter windage and elevation knobs with click locks - Thinner, weight-reducing elevation rail - New sleeve lock aperture block (included with all recurve models)