TRUGLO Range Rover 1 Pin TFO Black Sight Our brightest 1-pin archery sight. Extra, extra-long, protected, wrapped fiber. Aperture has a 1.8" inner diameter. Glow-in-the-dark shooters ring helps align peep sight. Glow-in-the-dark yardage tape. CNC machined. Ultra-light and compact. Vertical adjustment allows it to fit virtually all bows. Adjustable with one hand. Level with two vertical bars. Level is illuminated by luminescent shooters ring. Adjustable for left and right handed shooters.