Features:  The Scope of Application of The Propeller: This pair of propellers is suitable for all 2mm shafts, and the propeller propeller can be used for long-distance underwater ships.  The Function of The Oar: Reinforced elastic material has increased elasticity and pressure resistance, which improves the resistance of the brace. The Installation of The Oars: Easy to install, not easy to fall off after installation,easy and convenient to install and remove off. Light In Weight: It is light in weight, small size will not add extra safety to the ship and ensure safe operation.providing a stable flying experience. Oars Guarantee: If you have any questions about this product, please feel free to contact us, we will try our best to help you solve the problem. Specification:  Material: Nylon Color: Black Bore Diameter: Approx. 2mm / 0.07inch Length: Approx. 30mm / 1.18inch Weight: 1.4g Type: RC Propellers Quantity: 1 Pair/Set Package Includes: 1 x Pair of Boat Propellers