This kit includes 54 different sight tapes from which to choose. The engineers at Montana Black Gold have done the work and calibrated the charts so you don't have to. Simply shoot your adjustable sight at 20 yards and 60 yards and, using these two distances, select the sight tape for your bow's speed. With 54 tapes to choose from there is one for virtually any bow's speed. This kit will work with any type of adjustable bow sight and will make you more accurate by giving you precise, to-the-yard markings.