The Adjustable Pendulum Sight is one of the most advanced treestand sights available, Truglo's Pendulum sight automatically compensates for shots up to 35 yards, or it can be locked in place for ground shooting and adjusted on the bracket for different yardages. Made of CNC-machined aluminum, it's ultralight, compact and extremely quiet in the field. One .040" Tritium Fiber Optic pin. Fully asssembled.