Redline RL-1 Sight Black. It has adjustable 2nd and 3rd axis 0.19 fiber optic pin tool free locking adjustment knob windage adjustment knob enclosed fiber optic ring customizable/removable quick acquisition RL sight ring adjustable yardage pointer bubble level ultra-smooth wheel adjustment. Weighs 10.5 oz. Specifications for Redline RL-1 Sight: Manufacturer: Redline Color: Black Hand: Right Features of Redline RL-1 Sight: Full carbon bracket Adjustable 2nd & 3rd bracket 0.019 fiber optic pin Tool free locking adjustment knob Precise adjustment windage knob Customizable/removable quick acquisition RL sight ring Package Contents: Redline RL-1 Sight Redline RL-008-1: RL-1 Sight Black