Hobbico Twinstar .25 Twin ARF FEATURES: Construction: Balsa and plywood Wings: Two piece balsa and plywood joins with plywood joiners, attaches with nylon bolts, left and right end INCLUDES: Pre-built and covered wings, fuselage and tail assemblies, pushrods, pre-bent 0.16 (4mm) tricycle landing gear, three 2-3/4 (70mm) wheels REQUIRES: Engines: Two.20 -.40 cu in (3.3 - 6.5cc) 2-stroke OR two.26 -.30 cu in (4.2 - 4.9 cc) 4-stroke Muffler: Sports-Style supplied with engine