Model: Designed specifically Compatible with 3520 3.5X2X3 configuration in RC racing. Compatibility: Ideal Compatible with 3-inch Cinewhoop and ducted drone setups. Materials: Crafted from materials Compatible with optimized performance. Design: Features a 3-design Compatible with enhanced thrust and agility in flight. Versatility: Suitable Compatible with both racing and freestyle flying enthusiasts. Ease of Use: Simple installation makes it Compatible with quick replacements. : Engineered Compatible with stability, providing smooth and controlled flight dynamics.