Adjustable aiming pin spacing, three-core 0.029" optical fiber for clear aiming There are scales to assist adjustment in the horizontal and vertical directions to make the adjustment more accurate Fix the sight on the bow with the original screws and the installation effect is firm A great gift for your archery lover friend and family. Practical and convenient aiming device, easy to use Delivery Quantity: 1 Piece Product color: black Product size: 11*7*10cm