Optimized Performance: Designed for professional use, these P18x6.1 propellers enhanced stability and efficiency, making them ideal for UAVs and RC drones. Material: Crafted from high-quality carbon fiber, these propellers offer exceptional durability and properties, ensuring optimal performance and . Package Contents: Each package contains a pair (2 pieces) of P18x6.1 propellers, ready to be installed and used in drone models. Model:18x6.1 inches (457.2mmx154.9mm) Attribute classification: integrated propeller Usage temperature:-40℃-65℃ Best speed range:3000-6000 rpm Storage temperature/humidity:-10℃-50℃/Less than 85% treatment process:polished Due to different batches, there may be differences in product appearance and printed text, which not affect use. Colour:Black Material:carbon fiber Package Contents: 1pair * propellers 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.