I'm not 100% sure what these are called. I think they are Ludwig Hercules Parts. 3 Plastic Wing T-bolts, each in separate auctions.
Auction #1
http://www.ebay.com/itm/261838249448?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1586.l2649
Auction #2
http://www.ebay.com/itm/261838254564?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1586.l2649
Auction #3
http://www.ebay.com/itm/261838261146?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1586.l2649