Features 2mm Diameter Compatibility - Designed for 2mm diameter motor shafts, ensuring a precise fit for optimal performance in your DIY projects Powerful Wind Generation - This 40mm 4-blade design creates strong airflow, enhancing the speed and efficiency of your toy car or boat Durable Plastic Construction - Made from high-quality plastic materials, these propellers are lightweight yet built to withstand extensive use over time Versatile DIY Application - Ideal for remote control car models, these propellers come in a variety of colors, allowing for personalized decoration and enhancements Compact and Easy to Install - The small size and simple design facilitate quick installation, making these propellers a hassle-free replacement option for your projects Features: 1、[2mm Diameter] 40mm four blade propeller with aperture suitable for 2mm diameter motor shaft and straight shaft 2、[Strong Wind] Large wind, large th, many colors, light weight, small volume and easy installation 3、[ Materials] Made of plastic material, and can be used for a long time 4、[DIY Toy Car] Suitable for DIY toy accories remote control car model, a variety of colors can be selected to decorate your car 5、[4 Blades Design] The propellers have 4 blades and are small and compact in sizes, easy to install and do not take up space Specification: Item Type: Propeller Model: XR-145 Material: ABS Purpose: Suitable for DIY Toy Accories Remote Control Car Model Outer Diameter: Approx. 40mm / 1.6in Inner Hole: Approx. 2mm / 0.08in Blade Quantity: 4 Blades Package List: 10 x Propeller Package List 10 x Propeller