The Trek Pro Vertical Series brings you the clear picture you've been looking for with a compact vertical pin design — creating more space for you to aim with less distractions in your sight picture. 3 Vertical Pins with Micro Adjustable Top and Bottom Pins Set Up Two Vertical Pins with Dual Indicator Pointers Lightweight Design Featuring multi-positioning mounting holes 12” of fiber Optic Management System for Better Protection & Even Brighter Pins Machined Aluminum Construction for Added Durability Hybrid Elevation Adjustment with Dead Stop for Top Pin Micro Windage Adjustment with Laser Engraved Marks Available with .010” or .019” Blade Pins and in RH or LH configurations Adjustable 1st, 2nd, and 3rd Axis Lock Down Knob & Multiple Mounting Positions for Elevation & Windage Adjustments Accepts a 41mm Lens and Sunshade Interchangeable peep alignment rings: Green, Red, Yellow, and Grey Included Sliding rheostat cover to optimize pin brightness Laser engraved aluminum sight yardage scales Rheostat sight light included