This high-performance RC model engine is a must-have for any aviation enthusiast. With its compatibility for OS engines and nitro & glow fuel, this Conrod 40-46VF,SF,SX,FX,AX engine is sure to give your model airplane the power it needs to take to the skies. Made by O.S. Engines, you can trust that this engine is built to last and designed to perform. Suitable for ages 17 and up, this engine is compatible with 1:5, 1:8, and 1:10 scales. It is perfect for those who enjoy motor & engine parts & accessories, engine, exhaust & fuel systems, RC model vehicle parts & accessories, and radio control & control line toys & hobbies. Don't miss out on the chance to take your RC flying to the next level with this reliable and powerful engine.