Applicable for modification: remote control boat, nest ship, pull net boat, remote control submarine, miniature underwater robot. The underwater thruster design provides smooth operation and strong power. High-performance underwater thruster ensures improved work efficiency. Features fine workmanship, compact structure, eco-friendly materials, and durability for long-term use. Suitable for use in modification projects including remote control boats, nest ships, pull net boats, remote control submarines, and miniature underwater robots. Specifications: Hull length: 50mm Diameter: 31mm Total length: 76mm Propeller: 39mm Operating Voltage: 3V–12V Optimal performance at 6V–9V Maximum no-load speed at 7.4V: 16800 RPM/min Color: Blue Material: Metal Package Contents: 1 x Forward motor 1 x Reverse motor Note: Light reflection and differences in display screens may cause slight variations in color between the item and the image. Measurement allows an error of +/- 1–3 cm.