The Option Sights come with direct mount screws (10-24 X 1/2" Flathead Screws) that allow the sight to be mounted without a quiver adapter plate, and with a quiver adapter plate, standoffs, and long mount screws that can be used to mount the sight when you want to use a bow mounted quiver or Quivalizer.
If for any reason you need an extra set, that is what this is. This Quiver Adapter set includes; (1) Quiver Adapter Plate, (2) Adapter Plate Standoffs, and (2) Long Attachment Screws. This set works with all Option Sight models, allowing the mounting of any one piece bow mounted quiver.
*NOTE: When you purchase a Option Sight, this mount is included. This is a replacement item.