Wanted - 19 spine matched pair 4 bladed props for Arneson AD7 drives.

[Rotor-g]

Looking for "about" 13" x 17.5 or 14.5" x 16 to 18 " but open to idea. must be 4 blade 11 to 15" dia 16 to 19" pitch.
I have a pair of 16.5 x 28 and a pair of 18.5 x 26 if they are use to anyone