Gender: Unisex kids Material: ABS with glass fiber fill Size: 5 x 4.5\'\' Weight: 0.02KG Shaft Diameter: 6.0mm Color: Green Package size: 15 x 10 x 3 cm Suitable models: QAV250/280/300 EMAX 250/280/300/H250/280/300MM More strength, light weight, durable. Perfect upgrade for any small multirotor.