Axcel Achieve XP Pro Diamond Weave Extension Bar Black 6 in. LH Ultra-high modulus carbon bar, 2x stronger with thicker layers of carbon;Wedge lock bow mount bracket for the strongest hold;In-line tension adjustment for consistent targeting;10-32 windage lead screw;Enlarged diameter windage and elevation knobs with click locks;Thinner, weight-reducing elevation rail;Metal sight tape option for compound models