Enhance the performance of your RC underwater boat with this high-quality pair of 4-blade propellers, specially designed for a 4mm shaft. Crafted from superior plastic material, these propellers offer exceptional durability and long-lasting use, ensuring reliable operation even in demanding conditions. Engineered to provide strong thrust, they maximize the propulsion efficiency of your RC boat for smoother and faster movement in water. Key Features: · Precision Fit for 4mm Shaft: Designed specifically to fit securely on a 4mm shaft, ensuring stable installation and optimal performance. · Durable Superior Plastic Material: Made from high-quality plastic, these propellers resist wear and damage, providing long-term reliability for your RC projects. · Powerful Thrust Performance: Delivering strong propulsion, these propellers enhance the speed and maneuverability of your RC underwater boat. · Easy Installation & Secure Fit: Simple to attach and engineered to stay firmly in place without slipping or falling off during operation. · Lightweight and Compact Design: Weighing approximately 10g with a diameter of about 60mm (2.4 inches), the propellers add minimal weight to your boat, ensuring safe and efficient operation. Specifications: · Condition: 100% Brand New · Item Type: RC Accessory · Material: Plastic · Color: Black · Weight: Approx. 10g · Diameter: Approx. 60mm / 2.4 inch · Bore Diameter: Approx. 4mm / 0.16 inch · Hole Depth: Approx. 13.5mm / 0.53 inch Package Includes: · 1 x CW 4-Blade Propeller · 1 x CCW 4-Blade Propeller This pair of durable 4-blade propellers is an ideal upgrade for your RC underwater boat, delivering reliable thrust and easy installation to boost your boating experience with enhanced speed and control.