Description: 【Compatibility】: Specifically designed for WLtoys rc helicopter models K124 K170, ensuring a perfectly fit and optimal performance 【Material】: Constructed from quality pp, this main frame offers durability and resilience, making it ideal for long term use in various flying conditions 【Compact Size】: With dimensions of 9.5 cm in length and 3.5 cm in width, this rc helicopter main frame is compact yet sturdy, providing a stable structure for your helicopter model 【Package Contents】: Includes a main frame unit, providing you with the essential component needed to maintainence or upgrade your helicopter 【Ideal Replacement Part】: Great as a replacement part to ensure your helicopter remains in top condition and continues to perform its good during fly Size Chart: 9.5cmx3.5cm/3.74inchx1.38inch Package Includes: 1 RC Helicopter Main Frame Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.