This J'tec RC Exhaust Muffler is designed for the Pitts 51-60 model and is compatible with various airplane models in 1:5, 1:6, and 1:8 scales. It is made for gasoline, nitro, and glow fuel types and is suitable for use with universal brands. The model number for this item is JT-60 PB, and it is perfect for those who are looking for high-quality engine, exhaust, and fuel systems for their RC model vehicles.