Axcel Accutouch HD AV-31 1 Pin Bow Sight - Single pin adjustable sight features Accu-Click system which allows the shooter to set "clicks" at desired distances. As the sight elevation is adjusted, it will stop at those specified distances. A 45 degree facing sight tape makes it easier for the shooter to see where the yardage indicator is set. 1st, 2nd, and 3rd axis adjustments can be made without the use of shims. Micro adjust windage is locked into place until the Windage Lock Button is disengaged. HD versions are equipped with a Harmonic Dampener in the mounting bracket. Features Accu-Click system; 45 degree rear facing sight tape; Easy 1st, 2nd, 3rd axis adjustments; Windage lock button; Includes Axcel AV-31 scope;