TRUGLO Bow Sight EXTREMELY quiet. The most advanced treestand sights available. Automatically compensates for distances of up to 35 yards. Pendulum can be locked in place for ground shooting. .019 Pin. Extra-long protected, wrapped fiber.Adjustable for left and right-handed shooters Pre-printed yardage tapes included (TG701 only). 1.8 Aperture diameter.Removable adjustable rheostat LED  violet.