These came on the Strat Plus guitars that came from the factory with the Mini Floyd Rose tremolo bridge. It has no string hole because the strings were not strung through the block on the Mini Floyd Rose bridge. 

It's older and has some light play wear, but is in very good condition for the age. These original covers are super hard to find. It is 3-ply "Parchment White" in color, but has "yellowed" slightly with age. No cracks or functional issues and the screws set shown is included.