tailfin is part of:

tailfin contains:

Full expansion for tailfin:
   100%  2x5x3.6 Aquashark Tailfin (2x3 base)
   100%  2x5x3.6 Rounded Tailfin (2x3 base)
   100%  3x6x3.6 SpaceShuttle Tailfin, 2x3 base
   100%  4x7x4.6 Airplane Tailfin (2x2 top)
   100%  4x8 Dual-Tapered Tailfin Plate w/ Slit