Enhanced Performance: Experience superior flight dynamics. Designed for competitive FPV racing and freestyle flying, these propellers optimal thrust and improved control. Features: Fast response, fast acceleration, smoother flight. Construction: Crafted from high-quality materials, the 3-blade design withstands rigorous flying conditions, making it a reliable choice for drone enthusiasts. Upgrade and thickening: The blades are thickened at the weak points to avoid the situation where the aircraft cannot again after a small collision in the racing field. allowing for quick replacements to keep your drone flying at . Size:5 inches Pitch:3.1in Aperture:5mm Recommended motor:2207 2100KV Propeller disc diameter:129.7mm Center thickness:6.1mm Maximum blade width:14.7mm Colour:E:Light Fluorescent Yellow Material:PC Package Contents: 4 * Propeller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.