Set contains 3D-printed parts to build 1 engine "Wright R-2600 Twin Cyclone" in scale 1/72 Applications: Boeing 314 Clipper, Brewster SB2A Buccaneer, Curtiss SB2C Helldiver, Douglas A-20 Havoc, Douglas B-23 Dragon, Grumman F6F Hellcat, Grumman TBF Avenger, Liore et Olivier LeO 451, Martin Baltimore, Martin PBM Mariner, Miles Monitor, North American B-25 Mitchell, Vultee A-31 Vengeance