Product Description Elevate the performance and aesthetics of your RC boat with our 4-Blade Metal Propellers. Designed for a wide range of marine applications, including heavy boats, tug boats, fishing bait boats, wood boats, and more, these propellers are the perfect upgrade for enthusiasts seeking durability and efficiency. Key Features: Premium Material: Crafted from high-quality Zinc Alloy and finished with a striking gold plate, our propellers combine strength with a touch of elegance. Versatile Compatibility: Whether you're outfitting an RC boat, Marine cruiser, ROV, or any other vessel, these propellers are designed to enhance your model's performance. Precision Engineering: Made through casting, these propellers ensure a robust and durable solution for your boating adventures. Compatible with propeller drive dogs (not included). Size Options & Rotation: Choose between two sizes, D55mm and D60mm, with a consistent hub height of 17mm. Available in both Right-Hand (RH) and Left-Hand (LH) rotation to match your specific needs. Shaft Compatibility: With a shaft hole diameter of 4.15mm, these propellers are tailored to fit a 4mm diameter drive shaft, ensuring a secure and efficient connection. Tips: Right-Hand (RH) Propeller: Rotates clockwise from the stern view in forward gear for standard propulsion. Left-Hand (LH) Propeller: Rotates counter-clockwise from the stern view in forward gear, ideal for dual-prop setups or specific navigational requirements. Package Contents: 1 x 4-Blade Metal Propeller for 4mm Shaft (Please select your desired size and rotation type) Transform your RC boat with our Zinc Alloy 4-Blade Metal Propellers, designed for performance, durability, and a sleek appearance. Whether upgrading or replacing, these propellers offer a significant enhancement to your vessel's operational efficiency and style.