NIST #4 4" Target/Disc Set

For those who are going to add the more advanced UAV flight certification by adding the fourth standard/station to their flight pattern, here is the 4" target set for all four standards in the NIST practice/test lane.  This purchase includes black stickers for #1 & #3 buckets, and white stickers for #2 & #4 buckets, to make the complete set of standards/stations for quart size buckets.