Durable 4 inch 2blade propeller set, 2.5 inch pitch, designed for 5 mm shaft multirotors. This package includes two pairs (four props) in grey, with both clockwise and counterclockwise rotation for balanced setups and easy replacements. Key benefits Quieter flight and reduced vibration for smoother video and more stable flight handling. Stiffer polycarbonate construction provides consistent thrust and quick response to controls. Lightweight design at 1.7 g per prop helps maintain efficiency and extend flight time. Quick to install and remove for fast field changes and routine maintenance. Features and specifications Diameter: 4 inch Pitch: 2.5 Blades: 2 Material: polycarbonate Weight: 1.7 g per prop Hub diameter: 11.3 mm Hub thickness: 6 mm Shaft size: fits 5 mm shafts Rotation: includes both clockwise and counterclockwise props Color: grey Package: 2 pairs (4 props) Compatibility and use Works with quadcopters and other multirotor drones that use 5 mm shaft props and an 11.3 mm hub diameter. Suitable for RC FPV setups where quieter, more stable thrust is preferred. Ideal as spare props for practice flights, onsite repairs, or swapping between racing and freestyle configurations. What this solves Replaces damaged or worn props quickly to minimize downtime. Reduces noise and vibration compared to standard plastic props, helping produce cleaner video and steadier control inputs. Durable polycarbonate material resists typical field impacts and maintains blade shape under load. Contents HQ Durable style 4x2.5 grey propellers x 2 pairs (one pair CW, one pair CCW) Note: Confirm hub and shaft compatibility before installation.