With the E-Z-V Sight, you no longer have to range the distance prior to drawing your bow. Distance ranging is already pre-calculated into the design of the V-configuration. No More Range Finders! No More fuzzy Pins for Aging Eyes! No More Target Panic! Extended Low Light Target visibility Precision Shot Placement at Any Random Distance without Pre-Ranging Distance Unobstructed Open Sight Picture Alleviates Target Panic PROBLEM SOLVED! We carefully calculated the vital zone width of regulated hunted game species (X-Axis) and combined it with computer generated trajectory curves of your bow’s speed (FPS) specification (Y-Axis). Putting them together with geometry (V-Shape) equals a 1-step aiming/ranging process. SIMPLY Snap-in the V-Insert for your bow’s FPS Frame the animal’s rib cage and SHOOT…E-Z! Simultaneously ranges distance AND aligns aiming point with precision shot placement in one-step and in 1/10th the time of a traditional pin sight without the use of range finders or fuzzy/fragile sight pins. Eliminates human error of accurately ranging distance Precision shot placement at random distances without the use of pins or range finders Tick-Marks enable use as a traditional pin sight – but better Unobstructed open sight picture alleviates target panic – no more bobbing sight pins No more fuzzy pins for tired eyes Neon chartreuse yellow-green V-inserts for maximum low light shooting/hunting visibility conditions 5 easily interchangeable V-Inserts included to match YOUR bow’s trajectory curve – choose the one that’s right for you Perfect for deer, elk, moose, antelope, caribou, bear and turkeys 1,000 time stronger than fiber optics V-Inserts snap in and ready to go Visit Compound Bow Sight - E-Z-V Sight for more information!