pusher props
http://www.apcprop.com/
Bobf..... I've not seen a pusher jet that used props that big before. What is it ? Are you building a G&P F-18?? What engine are you using?
LP1406P 14X6P is the only thing up there.
I could have sworn they had a 12x6 or 12x8 pusher. No 12" or 13" listed. Next size down is 11x7P
Zinger makes a vast assortment of pusher props - wood - they have provided pretty good performance for me in the past.....
http://www.zingerpropeller.com/Pusher.htm
Grish/Tornado and Graupner make a few, but not in the size you are looking for
Bob