The O.S Max 40 RC Engine is a high-performance 2-stroke engine designed specifically for aeroplanes. Made by OS, a reputable brand in the RC industry, this engine is compatible with nitro and glow fuel, offering impressive power for your model aircraft. With a scale of 1:8, this engine is the perfect accessory for hobbyists looking to upgrade their RC model vehicles for optimal performance and precision. Old, not tested, may not be working?