Equip your compound bow with a Trophy Ridge React-One Pin Sight with Smart Pin Technology for simple sighting in through your entire shooting range. Smart Pin Technology calculates pin gap up to 100 yds. based on the distance between your 20-yd. pin and any other yardage. Once you set two yardage pins, you're ready to shoot through the entire range of your bow. Tool-less microwindage and elevation makes in-the-field adjustments simple. Second and third Axis Adjustability. Multiple mounting holes allow you to mount this lightweight, 100% aluminum sight on a wide variety of compound bows. The included rheostat light improves low-light visibility. A sight level ensures consistent shots. 0.19"-dia. fiber optics.