Description <br> Features: Easy assembly 3D Printing Engine Model Kit, featuring all necessary components for easy and enjoyable DIY experience. <br> . To complete the assembly for entirely functional, users also need to download the model files and 3D print the remaining parts. <br> This durability set ensures long time use model, perfectly for extend display or play. <br> For car model enthusiasts, educators, and DIY hobbyists precise and realism in their projects. <br> For most common 3D printers, users can customizing their printing setting to suit their equipment, making it a versatiled addition to any 3D printing collection. <br> <br> Specifications: Item：3D Printing Engine Model Kit <br> Yellow Motor Size Length: about 4.50cm/1.77in <br> In the Box： <br> 1. Motor (DC5V 59RPM) x1pcs <br> 2. BT2.6x8 SHCS Self Tapping Screw x 58(44pcs for assembly, remaining extras can be as spares) <br> 3. M3x23 SHCS Machine Screw x2pcs <br> 4. 4x2mm Round Magnetic x16pcs <br> 5. 0.5x7x12mm Helicaled Compression Spring x4pcs <br> <br> Package Includes: 1Set 3D Printing Engine Model Kit <br> <br> note: 1. Please power the device using a USB power supply with the specified voltages. <br> 2. Please test the operating of the mechanism by rotating the control handle before powering. After powering, verifies the operational status of the motor and be cautious to prevent motor blockage. <br> 3. It is recommended to use indoors at room temperature. <br> 4. The appearance of the engine in the picture needs the customer to print it in 3D, and the suit not include the engine. <br>